When I learnt of #decentralised social media years ago, I tried places like #Diaspora* (long form) & #Mastodon (microblog), but found them kind of barren in comparison to other social media I was using, especially Twitter. So eventually both accounts got deleted.
I haven't forgotten how these decentralised options operated but I felt wary about going back to them when latest Twitter events happened. Then I came across #CoSo & read its history with #Mastodon. I then wanted to give CoSo a chance.