You're not too old to have a social life... that happens once you're in a nursing home, and have worn out the good will of the staff. Up until that point, there are always new friendships and relationships to be had.
Going out to parties and drinking until morning is a lot harder on you than it was, that's a normal part of growing up. There are plenty of other things to do that are far more rewarding if you give yourself time to grow into them (and Covid rules don't prohibit them)
If you need a hobby, I suggest machining. Challenge yourself to make 1000 of some everyday hardware store item, like a 1/4" 10-24 x 2" screw, Flat head. You'll learn a lot of interesting history, and grow to appreciate the supply chain, along the way.
Note: Outside of the US, maybe some M8 Torx screws instead? You'll learn about Rotary Broaching, or cold heading, along the way.