I can say nothing other than sorry, I kind of know how this feels. I'm 20m and in college. Throughout high school and into the early years of college I had two great friends but as covid went along we kind a slowly dropped contact. I still can talk to them but they're such different people now. As it stand I really haven't had any good friends for about 2 years now. I remember that turning point being a difficult one, but at some point I did become calloused to the grating silence. I often just sit alone in my room for days on end until I have to go to class, but it's somewhat serene in it's simpleness. So I didn't exactly go through what you went through but I can relate somewhat, and like I stated before I can't do anything but say, sorry, you will get through this.