I'd consider volunteering to moderate a particular geographical area, when I was a student Facebook constantly took down the student confessions page I eventually ended up helping to run for the vaguest reasons, while letting actual hate posters run amok. I know I would say that, but we would genuinely get taken down for jokes that wouldn't even make sense out of the tiny university I attended. It was immensely frustrating having to build up the userbase again and again because the moderators of Facebook just weren't/aren't terribly good at their jobs. I'd happily have taken on actual moderation duties rather than had to constantly appeal and get a blank, inhuman "declined" message.

I think they tend to take an "if in doubt, remove it" approach which basically allows anyone who doesn't like a niche page for whatever reason to have it taken down through sheer attrition, if you report it enough it'll probably go down eventually even for stupid reasons. I actually ended up writing an app to cut Facebook out of our system altogether (it was kind of similar to Yik Yak with a much better moderation system and better anonymity protection - I really can't be arsed to deal with a GDPR lawsuit...) but we couldn't launch it in part because it took me ages to develop as I've since graduated and work as a full-time developer and because coronavirus meant our launch event got cancelled. I might take it live when students go back this year, but I'm concerned that with nothing much going on it'll fizzle and die because there's nothing interesting to post about. It'll all depend on how the Welsh government lift the coronavirus restrictions.