I feel for you comrade. I’ve had a very different journey than you but I’ve struggled with loneliness and lost friendships as well. I think an important thing to do in the short term is to reach out to your old friends. Some may be uninterested, but you might be surprised how easily many dormant friendships can be rekindled - I’ve had friends that I hadn’t spoken to for well over 5 years that picked back up like we didn’t miss a beat once I actually built up the nerve to reach out. This could be helpful to getting you out of a negative feedback loop.

I’ve seen this posted around here a few times. Do you know the source of where this came from? Not trying to be combative, just want to arm myself with more knowledge!