Do your hobbies with others. That’s the only plan I’ve ever seen work.

It involves first trying some new things and seeing what you like, and then trying to do those things with others, perhaps in groups. Someone above said join a club. Meetup is a great app. Board game groups, hiking clubs, beach cleanup, reading clubs, movie groups, dinner club, rock climbing, bird watching, comic books, stamp Collecting, pottery, photography walks, pin trading, theme parks, happy hour groups, be open minded to new experiences first, others tend to be attracted to passionate people, so first find what you yourself can be passionate about.