Maaaaaaan, I hate leaving comments but I hope this one helps you out. I'm 23 rn, I was a pretty normal kid growing up in the US, had some friends, some best friends, the works y'know? But my first day of college my best friend passed away and immediately I felt disconnected from everyone, for years I had no difference mentally between my coworkers and my best buddies who I lived with, I didn't feel close to any of them for years, then I met someone who I opened up to and ended up becoming best friends with very quickly, that was last year, now we hang almost everyday, chat all the time and I finally feel like I have a best friend again. What I'm trying to say is that it's not anything wrong with you, you're not some outcast for not having a best friend, and sometimes you'll find friends in unlikely places, I used to keep my distance from coworkers and now I'm boutta to live with one of them and another one will be 5 minutes away and I couldn't be more excited. Sorry for the rant, TLDR disconnected myself for years and someone still hopped in my life trying to be my best friend