Which is why I don't think the way forward is for everybody to leave social media. It's just not going to happen en masse, that's asking too much. We need to build media which can't be owned. If we ask people to sacrifice something, it should be an extra few cents on their electric bill and yesteryear's phone plugged in somewhere and hosting their share of it.
I've only been exploring it for a few days now, but nostr seems promising for this kind of thing. The content is awful, just coin bro stuff, but as something to plug into and build apps for... seems legit.
I have quite a few group chats with no more than a dozen people in each one, with many that have only 3 or 4 people. And I make a point to message people one-on-one to keep in touch, and set up time to meet in person for people who are local to where I live. For people who aren't local, we make a point to meet up in some city somewhere once a year or so, depending on the closeness of the friendships in the group.
It requires more work than scrolling a Facebook feed and commenting on people's posts, but it's orders of magnitude more rewarding. And I don't miss the other hundreds of people on Facebook who I don't hear about at all now.