Four months in, quitting Twitter and Facebook (I never really browsed Instagram) feels great. As I wrote when I decided to quit, I felt that it was repetitive and that I wasn't going to miss anything. I can confirm that now.
I still have personal accounts, but I use them solely to repost posts from my business accounts, something that happens maybe twice per month. I also have a Discord chat for business, which in itself is a bit of a community. Discord has an IRC vibe to it, although it's of course corporate stuff with no privacy.
I also didn't do much about alternative socials such as Gab and Minds. I've had accounts there for a long time. When I was on Twitter I'd at least repost those tweets, but now that I'm out of the loop, I don't feel like posting anything on any social networks. I think that it's the format itself that is wrong.
What makes more sense it's to just hang out in private groups of friends on messaging apps. That's definitely more natural and also a lot safer for people that may be afraid to lose their job for saying certain things on public squares such as Twitter. Thankfully that's not my case, but nevertheless, I recognize the benefit of small chat groups as opposed to openly posting on socials where it's more likely to be noticed the day that one says something that gets him crucified.