Recovering Hikiki here, it sucks to say, but the normie advice works man. One step at a time, you gotta do stuff that helps with your mental health. Try reading a book, making friends on a discord server, doing a little exercise, and slowly taking more and more steps.
I'm still a nerd and weirdo and whatever, but I've got a decently strong online friend group and I go to the gym semi regularly now, and I've got the mental health to start going back to classes finally. Cope is for problems, not symptoms. Loneliness is a problem that can be fixed. Anhedonia is a super common symptom for lots of mental health issues. Stay strong anon, you can do it.