I think the Photo Album thumbnails are way too small and the "masonry" layout looks messy. Insert this code snippet into the user stylesheet just before the media queries and you'll have larger, more consistent thumbnails (like FB albums view) and styled image management buttons. I'm not doing this a file attachment since I learned there's no way in Friendica to delete file attachments.

/* Photo Albums */
.photo-album-actions .icon-padding,
.photo-edit-link-wrap .icon-padding {
    margin-left: 10px !important;
}
.photos-upload-link {
    font-size: 28px;
    color: #0866FF !important;
    opacity: 1 !important;
    border-radius: 8px;
    padding: 0px 8px;
}
#photo-album-link {
    opacity: 1 !important;
}
.photos-upload-link i,
#photo-album-link i,
#photo-edit-link i,
#photo-toprofile-link i,
#album-edit-link i,
#album-drop-link i,
.photos-order-link i {
    font-size: 24px !important;
    color: #0866FF !important;
    opacity: 1 !important;
    border-radius: 100% !important;
    padding: 8px 11px !important;
    height: 40px;
    width:  40px;
}
    #photo-edit-link i.fa-image {
        padding: 6px 7px !important;
    }
.photos-order-link {
    margin-top: 5px !important;
}
    .photos-upload-link:hover i,
    .photos-upload-link:focus i,
    #photo-album-link:hover i,
    #photo-album-link:focus i,
    #photo-edit-link:hover i,
    #photo-toprofile-link:hover i,
    #photo-toprofile-link:focus i,
    #album-edit-link:hover i,
    #album-edit-link:focus i,
    #album-drop-link:hover i,
    #album-drop-link:focus i,
    .photos-order-link:hover i,
    .photos-upload-link:hover i,
    .photos-upload-link:focus i {
        background-color: rgba(128,128,128,.1) !important;
    }
.photos-content-wrapper .photos-upload-link::before {
    content: 'Add Photos';
    font-size: 15px; 
    vertical-align: middle; 
    margin-top: -10px;
    display: inline-block;
}
.justified-gallery {
    overflow: visible !important;
}
.justified-gallery > a, 
.justified-gallery > div, 
.justified-gallery > figure{
    height: 180px !important;
    width: 180px !important;
    border: 1px solid #ccc;
    position: relative !important;
    top: auto !important;
    left: auto !important;
    border-radius: 8px;
    margin: 4px !important;
}
.justified-gallery > .jg-entry-visible > img,
.justified-gallery > .jg-entry-visible > a > img,
.justified-gallery > .jg-entry-visible > svg,
.justified-gallery > .jg-entry-visible > a > svg{
    width: 100% !important;
    height:  100% !important;
    margin: 0 !important;
    top: 0 !important;
    left: 0 !important;
    object-fit:cover;
    object-position: center;
}
#photo-photo {
    margin: 0 auto !important;
}

It will look like this:

Revised button labels styling so engagement counts aren't just hanging below the buttons but are more consistent with other notification counts:

/* ACTION BUTTON LABELS */
.wall-item-actions-row button,
.wall-item-actions-right button {
    display: block;
    white-space: normal !important;
    margin: 0 auto !important;
}
.wall-item-actions-row button::after,
.wall-item-actions-right button::after {
    font-size: 14px;
    font-family: sans-serif;
    display: block;
    margin-top: 2px;
}
.wall-item-response {
    overflow: visible !important;
}
.button-comments::after {
    content: 'Comment';
}
.button-announces::after {
    content: 'Share';
}
    .share-links .dropdown-toggle::after {
        content: 'Share';
    }
.button-votes::after {
    content: 'Quote';
}
.button-likes::after {
    content: 'Like';
}
[id^="dislike-"]::after{
    content: 'Dislike';
}
.wall-item-actions-right .dropdown-toggle::after,
.more-links .dropdown-toggle::after {
    content: 'More';
}
.wall-item-response span {
    position: relative;
    text-align: center;
    display: block;
    background-color: #0866FF;
    box-shadow: -1px 1px 1px #fff;
    border-radius: 4px;
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    width: fit-content;
    padding: 0px 7px;
    margin-left: 55%;
    top: -62px;
    z-index: 1;
} 
.vote-event:not(:has(.wall-item-response:empty)) {
    padding-bottom: 135px;
}
.vote-event .wall-item-response{
    position: absolute;
    top: 63px;
}
.vote-event .wall-item-response:empty{
   display: none;
}
.vote-event .wall-item-response:nth-of-type(1){
    left: 15px;
}
.vote-event .wall-item-response:nth-of-type(1) .button-event::after{
    content: 'Going';
}
.vote-event .wall-item-response:nth-of-type(2){
    left: 105px;
}
.vote-event .wall-item-response:nth-of-type(2) .button-event::after{
    content: 'Can\'t Go';
}
.vote-event .wall-item-response:nth-of-type(3){
    left: 204px;
}
.vote-event .wall-item-response:nth-of-type(3) .button-event::after{
    content: 'Maybe';
}
/* END OF ACTION BUTTON LABELS */

Okay, here is my first try at the DARK MODE variant! Set your Friendica theme to "Frio" and the Theme Customization to either "Dark" or "Black" and Save your settings. Then copy and paste the code below into your user stylesheet and restart your browser. If you're using Firefox wrap all of it inside of @-moz-document domain(friendica.world){...} (or whatever domain you're on). Hopefully this works, I don't know what the character limit is here.

/* FRIENDICA MODS V2 DARK MODE */
body {
       background-color: #1C1C1D !important;
       font-size: 15px !important;
       padding-top: 125px !important;
}
#topbar-first .nav > li > a, 
#topbar-first .nav > li > button, 
nav.navbar .nav > li > a, nav.navbar .nav > li > button{
       color: #B0B3B8 !important;
       
       }
#topbar-first, nav.navbar {
       background-color: #252728 !important;
       color: #B0B3B8 !important;
}
       #topbar-first .topbar-nav .nav-segment {
              margin-right: 10px;
       }
       #topbar-first .nav > li > a:hover:not(.selected) {
              background-color: rgba(255,255,255,.1) !important;
              border-radius: 8px !important;
       }
       .fa-lg {
              font-size: 24px !important;
       }
#topbar-first .nav > li > a:hover, 
#topbar-first .nav > li > a:focus, 
#topbar-first .nav > li > button:not(#main-menu):hover, 
#topbar-first .nav > li > button:not(#main-menu):focus, 
nav.navbar .nav > li > a:hover, 
nav.navbar .nav > li > a:focus, 
nav.navbar .nav > li > button:hover, 
nav.navbar .nav > li > button:focus {
  background-color: rgba(255,255,255,.1) !important;
       border-radius: 8px !important;
       
}    
#topbar-first .nav > li > a.selected {
       border-bottom: 3px solid #0866FF !important;
       color: #0866FF !important;
}
#topbar-first .nav > li > a.selected:hover,
#topbar-first .nav > li > #main-menu:hover,
#topbar-first .nav > li > #main-menu:focus {
       background-color: transparent !important;
       border-radius: 0 !important;
}
ul.tabs li {
       font-size: 15px !important;
       margin-left: 10px !important;
}
ul.tabs li.active {
       border-color: #0866FF !important;
}
       ul.tabs li a {
              margin-top: 8px;
              color: rgb(90, 167, 255) !important;
       }
       ul.tabs li:hover:not(.active) {
              border-bottom-width: 0px !important;
       }
              ul.tabs li:hover:not(.active) a {
                     background-color: rgba(255,255,255,.1) !important;
                     border-radius: 8px !important;
              }
        .dropdown-menu {
            padding-bottom: 15px !important;
        }
            .dropdown-menu li {
                margin: 10px;
                width: 92% !important;
                border-radius: 8px;
            }
                .dropdown-menu li:hover {
                    border-color: transparent !important;
                }             
header #banner {
       left: 0 !important;
       right: auto !important;
}
       header #banner #logo-img,
       .navbar-brand #logo-img {
              background-color: #0866FF !important;
       height: 40px !important;
       width: 40px !important;
       }
.topbar ul.nav {
       left: 50% !important;
       margin-left: -25% !important;
       position: relative;
}
#topbar-first .nav > .account img {
       border-radius: 100% !important;
       box-shadow: 0 0 1px rgba(255,255,255,.1) !important;
       height: 40px !important;
       width: 40px !important;
}
#search-box {
       position: fixed !important;
       left: 100px;
}
#topbar-first #search-box .form-search {
       height: 40px !important;
       font-size: 15px;
       background-position: unset;
       box-shadow: none !important;
}
#search-box form > div {
       background-color: #333334;
       border-radius: 50px;
}
#search-box form > div::before {
       content: '\f002';
       font-family: ForkAwesome;
       position: absolute;
       left: 10px;
       top: 8px;
}
#search-box .form-control.form-search {
       border-radius: 50px !important;
       background: transparent !important;
       width: 100% !important;
}
#search-box .form-control::placeholder {
       color: #B0B3B8 !important;
}
#topbar-first #search-box .btn {
       font-size: 0px !important;
         height: 32px;
       width: 32px;
       top: 2px !important;
       background-color: black !important;
}
#topbar-first #search-box .btn::before {
       content: '\f061';
       font-family: ForkAwesome;
       font-size: 15px;
       color: #B0B3B8;
}
#nav-user-menu, #nav-notifications-menu {
       background-color: #252728 !important;
       border: 1px solid #1C1C1D !important;
}
#nav-user-menu {
min-width: 250px !important;
}
.nav-pills .dropdown-menu li a, 
.nav-pills .dropdown-menu li .btn-link, 
.nav-tabs .dropdown-menu li a, 
.nav-tabs .dropdown-menu li .btn-link, 
.account .dropdown-menu li a, 
.account .dropdown-menu li .btn-link, 
.contact-photo-wrapper .dropdown-menu li a, 
.contact-photo-wrapper .dropdown-menu li .btn-link {
       color: #B0B3B8 !important;
       border-color: #252728 !important;
}
       .nav-pills .dropdown-menu li > a:hover, 
       .nav-tabs .dropdown-menu li > a:hover, 
       .account .dropdown-menu li > a:hover, 
       .contact-photo-wrapper .dropdown-menu li > a:hover, 
       .nav-pills .dropdown-menu li.selected a, 
       .nav-tabs .dropdown-menu li.selected a, 
       .account .dropdown-menu li.selected a, 
       .contact-photo-wrapper .dropdown-menu li.selected a {
              color: #333 !important;
              background: #f2f2f2 !important;
              border-radius: 8px;
       }  
.nav-pills .dropdown-menu li.divider, 
.nav-tabs .dropdown-menu li.divider, 
.account .dropdown-menu li.divider, 
.contact-photo-wrapper .dropdown-menu li.divider {
       background-color: #252728 !important;
}    
#topbar-first #nav-notifications-menu {
       border: 1px solid #1C1C1D !important;
}
#topbar-first #nav-notifications-menu li {
       border-color: transparent !important;
box-sizing: border-box;
       margin: 10px;
       border-radius: 10px !important;
       width: 94% !important;
}
#topbar-first .notification-unseen {
       background-color: rgba(56, 88, 152,.2) !important
}
#topbar-first #nav-notifications-menu li.notif-entry:hover{
  background-color:rgba(128,128,128,.2) !important;    
         border-color: transparent !important;
}
#topbar-second {
       height: 60px !important;
       background-color: #252728 !important;
       border-color: #333 !important;
}
       .btn.btn-primary:hover,
       .btn.btn-primary:focus {
              border-radius: 8px !important;
       }
       #dropdownMenuTools {
              height: 40px;
              width: 40px;
              background-color: rgba(255,255,255,.1) !important;
              border-radius: 100% !important;
              margin-top: 5px !important;
              margin-right: 10px !important;
       }
              #dropdownMenuTools:hover,
              #dropdownMenuTools:focus {
              background-color: rgba(0,0,0,.1) !important;
       }
       #jotOpen {
              border-radius: 8px !important;
              background-color: #0866FF !important;
              color: #ffffff !important;
              border-color: #000 !important;
              box-shadow: none !important;
       }
       #jotOpen:hover, #jotOpen:focus {
              box-shadow: inset 0 0 100px rgba(0,0,0,.1) !important;
       }
       #jotOpen::before {
              content: 'Compose';
              font-size: 15px;
              margin-right: 10px;
              line-height: 32px;
              position: relative;
              display: inline;
              top: -4px;
       }
       #jotOpen .fa-pencil-square-o {
              font-size: 32px !important;
              position: relative;
              top: 4px;
       }
       #topbar-second #nav-short-info {
              margin-top: 10px;
       }
/* Other people profiles */
#mention-link {
border-radius: 8px !important;
              background-color: #0866FF !important;
              color: #ffffff !important;
              border-color: #000 !important;
              box-shadow: none !important;
       padding: 0 16px !important;
}
       #mention-link:hover,
       #mention-link:focus {
              box-shadow: inset 0 0 100px rgba(0,0,0,.1) !important;
              
       }
       #mention-link span:first-of-type {
              float: right;
              font-size: 32px;
              top: 4px;
       }
       #mention-link span:first-of-type .fa-2x {
              font-size: inherit !important;
       }
       #mention-link span:last-of-type {
              font-size: 15px;
              margin-right: 10px;
              line-height: 32px;
              top: 6px;
              position:relative;
       }
#contact-edit-status-wrapper {
       margin: 15px 0px !important;
       border-radius: 10px;
}
/* sidebar widgets */
aside .widget,
.nav-container .widget {
       background-color: #1C1C1D !important;
       -webkit-box-shadow: none !important;
       -moz-box-shadow: none !important;
       box-shadow: none !important;
}
.tread-wrapper {
       background-color: rgb(37, 39, 40) !important;
  box-shadow: 0 0px 1px rgba(0,0,0,.5) !important;
  border-radius: 10px !important;
}
.wall-item-container .media {
       background-color: rgb(37, 39, 40) !important;
       border-radius: 10px !important;
}
.well {
       -webkit-box-shadow: none !important;
       box-shadow: none !important;
}
       .contact-photo,
       .contact-photo-xs {
              border-radius: 100% !important;
              border: 1px solid #252728 !important;
       }
.hovercard {
       background-color: #252728 !important;
       border: 1px solid #1C1C1D !important;        
}
       .hover-card-pic img.thumbnail {
              border-radius: 100% !important;
              background-color: #1C1C1D !important;
              border-color: black !important;
       }
       p.wall-item-announce,
       .media .time, .media .shared-time,
       .media .delivery, .media .location,
       .media .location a {
              font-size: 13px !important;
       }
              .type-link, .type-video {
                     padding: 0 !important;
                     margin:  0 !important;
                     background-color: rgb(51, 51, 52) !important;
                     border: 1px solid rgb(101, 104, 108) !important;
              }
              .type-link h4, .type-link blockquote, .type-link sup,
              .type-video h4, .type-video blockquote, .type-video sup {
                     padding-left: 10px !important;
                     padding-right: 10px !important;
              }
       /* ACTION BUTTON LABELS */
       .wall-item-actions-row button,
       .wall-item-actions-right button {
              display: block;
              white-space: normal !important;
              margin: 0 auto !important;
              -webkit-box-shadow: none !important;
              box-shadow: none !important;
       }
       .wall-item-actions-row button::after,
       .wall-item-actions-right button::after {
              font-size: 14px;
              font-family: sans-serif;
              display: block;
              margin-top: 2px;
       }
       .wall-item-response {
              overflow: visible !important;
       }
       .button-comments::after {
              content: 'Comment';
       }
       .button-announces::after {
              content: 'Share';
       }
              .share-links .dropdown-toggle::after {
                     content: 'Share';
              }
       .button-votes::after {
              content: 'Quote';
       }
       .button-likes::after {
              content: 'Like';
       }
       [id^="dislike-"]::after{
      content: 'Dislike';
       }
       .wall-item-actions-right .dropdown-toggle::after,
       .more-links .dropdown-toggle::after {
              content: 'More';
       }
       .wall-item-response span {
              position: relative;
              text-align: center;
              display: block;
              background-color: #0866FF;
              box-shadow: -1px 1px 1px #000;
              border-radius: 4px;
              color: #fff;
              font-size: 12px;
              font-weight: 700;
              width: fit-content;
              padding: 0px 7px;
              margin-left: 55%;
              top: -62px;
              z-index: 1;
       } 
      .vote-event:not(:has(.wall-item-response:empty)){
            padding-bottom: 135px;
      }
      .vote-event .wall-item-response{
            position: absolute;
            top: 63px;
      }
      .vote-event .wall-item-response:empty{
            display: none;
      }
      .vote-event .wall-item-response:nth-of-type(1){
            left: 15px;
      }
      .vote-event .wall-item-response:nth-of-type(1) .button-event::after{
            content: 'Going';
      }
     .vote-event .wall-item-response:nth-of-type(2){
            left: 105px;
     }
     .vote-event .wall-item-response:nth-of-type(2) .button-event::after{
            content: 'Can\'t Go';
     }
     .vote-event .wall-item-response:nth-of-type(3){
            left: 204px;
     }
     .vote-event .wall-item-response:nth-of-type(3) .button-event::after{
            content: 'Maybe';
     }
       /* END OF ACTION BUTTON LABELS */        
#profile-photo-wrapper {
    overflow: visible !important;
    padding: 5px;
    background-color: #1C1C1D;
    border-radius: 100%
}
aside .widget li {
    margin-bottom: 8px;
}
aside .vcard img.u-photo, aside img.vcard-photo {
    border-radius: 100% !important;
    box-shadow: 0 0 1px rgba(0,0,0,.3);
    border: 3px solid #1C1C1D;
}    
aside .widget h3.p-name {
    font-size: 32px !important;
    text-align: center;
    word-break: break-word;
}
aside .vcard .p-addr {
    font-weight: 600;
    text-align: center;
    white-space: break-spaces !important;
}
aside .widget li.selected {
    background-color:rgba(56, 88, 152,.2) !important;
    border-color: transparent !important;
    border-radius: 8px;
}
aside .widget li.selected a {
    font-weight: bold;
}
aside .widget li:hover {
    background-color:rgba(128,128,128,.2) !important;
    border-color: transparent !important;
    border-radius: 8px;
}
#widget-contacts {
    background-color: rgb(37, 39, 40) !important;
    border-radius: 8px !important;
    box-shadow: 0px 1px 2px 0px rgba(0, 0, 0, 0.2) !important;
}
       .contact-block-img {
            height: 100px !important;
            width: 100px !important;
            border-radius: 8px !important;
            box-shadow: 0 0 1px rgba(0, 0, 0, .2);
            margin: 5px;
       }
.comment-fake-form {
    border: none !important;
    background-color: transparent !important;
}
.comment-fake-form textarea {
    border-radius: 50px !important;
    background-color: rgb(51, 51, 52) !important;
    box-shadow: none !important;
    -webkit-box-shadow: none !important;
}    
.wall-item-actions button {
    font-size: 24px !important;
    color: #B0B3B8 !important;
}
       .wall-item-actions button:hover {
              color: #0866FF !important;
       }
       .wall-item-actions .checkbox {
              padding-top: 6px !important;
       }
       .comment .media-body {
              padding: 10px;
              background-color: rgb(51, 51, 52);
              border-radius: 20px;
       }
       .wall-item-actions-row .wall-item-emoji {
              font-size: 18px;
              line-height: 40px;
       }
       .navicon {
              font-size: 20px;
              position: relative;
              top: 1px;
       }
/* not obviously clickable or intuitive what it does */
        .plink.u-url::before {
            Content: 'Link: ';
        }    
.img-allocated-max-width {
       margin: 20px auto;
}

/* Photo Albums */
.photo-album-actions .icon-padding,
.photo-edit-link-wrap .icon-padding {
    margin-left: 10px !important;
}
.photos-upload-link {
    font-size: 28px;
    color: #0866FF !important;
    opacity: 1 !important;
    border-radius: 8px;
    padding: 0px 8px;
}
#photo-album-link {
    opacity: 1 !important;
}
.photos-upload-link i,
#photo-album-link i,
#photo-edit-link i,
#photo-toprofile-link i,
#album-edit-link i,
#album-drop-link i,
.photos-order-link i {
    font-size: 24px !important;
    color: #0866FF !important;
    opacity: 1 !important;
    border-radius: 100% !important;
    padding: 8px 11px !important;
    height: 40px;
    width:  40px;
}
#photo-edit-link i.fa-image {
    padding: 6px 7px !important;
}
.photos-order-link {
    margin-top: 5px !important;
}
    .photos-upload-link:hover i,
    .photos-upload-link:focus i,
    #photo-album-link:hover i,
    #photo-album-link:focus i,
    #photo-edit-link:hover i,
    #photo-toprofile-link:hover i,
    #photo-toprofile-link:focus i,
    #album-edit-link:hover i,
    #album-edit-link:focus i,
    #album-drop-link:hover i,
    #album-drop-link:focus i,
    .photos-order-link:hover i,
    .photos-upload-link:hover i,
    .photos-upload-link:focus i {
       background-color: rgba(255,255,255,.1) !important;
    }
.photos-content-wrapper .photos-upload-link::before {
    content: 'Add Photos';
    font-size: 15px; 
    vertical-align: middle; 
    margin-top: -10px;
    display: inline-block;
}
.justified-gallery {
    overflow: visible !important;
}
.justified-gallery > a, 
.justified-gallery > div, 
.justified-gallery > figure{
    height: 180px !important;
    width: 180px !important;
    border: 1px solid #ccc;
    position: relative !important;
    top: auto !important;
    left: auto !important;
    border-radius: 8px;
    margin: 4px !important;
}
.justified-gallery > .jg-entry-visible > img,
.justified-gallery > .jg-entry-visible > a > img,
.justified-gallery > .jg-entry-visible > svg,
.justified-gallery > .jg-entry-visible > a > svg{
    width: 100% !important;
    height:  100% !important;
    margin: 0 !important;
    top: 0 !important;
    left: 0 !important;
    object-fit:cover;
    object-position: center;
}
#photo-photo {
    margin: 0 auto !important;
}

@media screen and (max-width: 1280px) {
    #search-box { 
        width: 18% !important;
    }
}
@media screen and (max-width: 991px){
    #search-box {
        left: 15%;
    }
    #jotOpen::before {
        content: '';
        margin: 0;
    }
    #mention-link span:last-of-type {
        margin-right: 42px;
    }
}
@media screen and (max-width: 768px){
    #topbar-first .navbar-toggle[data-target="#search-mobile"]{
        position: fixed !important;
        left: 15%;
    }
    #search-mobile {
        top: 110px !important;
    }
}