I hear you. I have been alone for a long time. I tortured myself and everyone around me until I had nothing left. Eventually I learned to accept my situation and loneliness/despair turned into just being alone.
For the first time in what feels like 3 lifetimes ago my happiness is trending up, alone. Because I’ve learned how to be happy alone.
The thing that turned my life around is realizing that no one wants a partner (or a friend) who can’t handle being alone. We all need to support our own happiness. That doesn’t mean you can’t be happier with friends. Just means you need to maintain a minimum level of happiness on your own. When I understood how important it was to be independently happy, it seemed like alot of other problems vanished. (Although it took a long time to get from realization to positive change)
These days I’m much happier, and still alone. It still bothers me sometimes. But for the most part I don’t really care anymore. I’ve found a way to be happy and I don’t need anyone else to help with that.
No trying to tell anyone what to do. Just relating and sharing my own experience.