Active and non-toxic fandoms to join?

I've joined my current fandom last year, when it was already tiny. I'm not sure what happened, but with the start of 2025, the community's activity has gone from low to almost nonexistent. There have been only two new fics added to the ao3 tag since the start of the year (and no updates on WIPs), and despite both of them being wonderful, they're both struggling to reach 10 kudos. I'm in a Discord server for this fandom, but even there, most days, it's radio silence.

It's been making me sad, and now I feel the need to join an active fandom. I miss being in fan spaces where people post fanart or fanfiction every day or have discussions about the source material.

I've considered getting into Arcane, but one of my friends is into that fandom and told me it's very toxic. I know every fandom has its bad apples, but I'd like to join one that is MOSTLY chill even without blocking half of Twitter/tumblr.

Does anyone have any recs? My preference would be an animated show—it doesn’t matter if it’s American, Japanese, or whatever. Both adult and kids' shows are fine. Thank you!