I'm part of a lot of smaller women-centered communities on reddit - my favorite subreddits were r/MoneyDiariesACTIVE, r/FIREyFemmes, r/girlsgonewired r/adhdwomen, r/AmateurRoomPorn, r/AskWomenOver30, etc. Not all of these are explicitly for women only but they all have a majority female user base. I don't think there are equivalents in a forum-type format; I'd probably have to go to TikTok or something, but I don't care for that format so I'll probably just lose those communities for the most part.
The big "mostly women" subreddit I'll miss, despite being a guy, is the /r/RomanceBooks subreddit. It is hands down the best book community on reddit. At least as far as community and moderation goes. It sounds like the mods don't think the alternatives are technologically mature enough.
