Help with how to manage relationships

Diagnosed with depression and bipolar affective disorder. Genetic. On meds.

I have already ruined so many friendships because of this and want to stop doing that. I literally only have 2 friends at this moment which is kind of embarrassing at 22.

Along with it I'm also boderline so you can understand why I don't have friends. My expiry date for a friendship is 3 years for some reason.

I want to learn how to stop making people leave me before I start a relationship and get married and stuff. Divorce is not viewed favourably in my country and I would like to avoid that.

Any advice would be helpful.