Maybe you could try doing social activities, you never know, you might still like it and could help you. You could also try to keep in touch with your friends no matter how far they are.

My friend circle is very small as well, I think I can understand your feeling. You still have many years left, I got a job when I was 25 years old, I had little to no success and repeated failures before that. I had no confidence in myself, but I kept trying.

Try to keep yourself busy, and do little things that give you even a hint of happiness. I gave up on learning guitar 3 years ago, but I am making great progress now because I just gave it a chance. Now I have something to do when I'm feeling down.