tldr if you need social interaction you need to go out and do social interactions

Anyway for me the only thing that sort of works is group sport sessions. I swim and go to group trainings twice a week. It doesn't get me any real friends, but I get people to talk to, we have chat and everything. This is the only time I don't feel lonely atm. Going out to some advernture-like activities will be even better - camping, biking, trail walking. But you need to find group of people to go out with. It is easier to do if you work in some big company - there probably already some groups like this. I did positive experience with coworkers, but sadly it didn't last.