I use facebook for personal connections. I tried to get into twitter, but never really managed to. I use gab a bit, mostly because I met a few chill people there and it has groups, which I like much better than the twitter set up, and reddit for a small handful of subreddits, including vexillology and a couple of fandoms. Twitter, gab, and reddit are all cesspools though, TBH. I've also joined a few discord servers. Basically I have a small presence on a bunch of sites instead of a large presence on one.