How to be confident in life

Guys I have to join the college next week. I know it's important for me and my future. Yet I don't wanna go there. I hate being surrounded by people. I live with my parents and love staying in my home. Why am I like this?

I'm always worried that people will judge me and make fun of me. I've been to therapists and psychiatrists, it helped for a few months but now I'm back to square one.

I have absolutely zero respect for myself, I consider myself a loser.

How to add motivation to your life? How to bring in confidence? How to be happy again?