You don’t need a social life to have a relationship with a woman. I am 30+, still don’t have a social life, but always a relationship. How?
Brute force method.
Increase your search space, search online too, there are many apps like thaifriendly, brute force tinder with a bash script (2000 likes a day) etc. You will have lots of matches, most won’t really talk but eventually it’s jackpot. Try increasing distance and age range too, you are playing lottery. If you are very lazy, consider mail order bride or write an inmate.
I don’t have advice on maintaining a relationship, but this will get you laid.
Don’t talk to them about depression, loneliness or negative topics, avoid talking about sex too. If they ask, you are single for 1.5 year. Don’t worry, everybody lies.
As for depression and suicidal thoughts, talk with a psychologist about that.