Lemmy is the only one I'll log onto and the only one I have as an app.
Sometimes though, I'll miss a super specific community from the place spez ruined, and scroll through it in DuckDuckGo browser.
Anything that has an intransparent, engagement driving, ad laden algorithm that determines what you do and don't see is thoroughly unappealing to me. At least now that I'm a little more tech savvy and anti-corporate.
I guess I do technically have a Facebook account still because I don't remember the password of either that account or the associated email address. I used that for local flea market and food sharing groups up until maybe 6 years ago.