in reply to Sarah W

Under each post, there's (at least when using the web interface)
- a speech bubble, for comments
- two square-round arrows, for re-sharing
- quotation mark, to quote-and-share
- thumbs up toggle, for positive
- thumbs down toggle, for negative
and then at the end of that row
- three dots, which gives you a drop-down menu
- check-box square, to select

The three dots drop-down menu has "Report post" at the very bottom.
No idea if it's just possible to report separate posts, or if there's a "report this whole profile" somewhere as well.

in reply to Sarah W

Same for me ...

go to Community (which defaults to Local community)
friendica.world/community

I know it defaults to Network, and I assume that will make sense if you use a Friendica account to keep in touch with people on Mastodon (which is what I hope I'll be able to do - I think I'll be happy if I can lure people over to any of the Fediverse platforms ... )
friendica.world/network