Learn how to embrace isolationism while you are trying to escape it. It's really not that hard. Think how much shittier your life could be living alone on the street.

You appear to have a good life, but you are alone. Don't let being alone ruin your good life. If you ever start getting involved with people, there will be times when you will wish you could return to isolationism.

Once you have become content with your isolationism, you will appear to be less desperate to your new potential contacts. Many people run away from socially desperate people. Having no friends is a serious problem for attracting a mate tho.

I think you need to start there. Make a real life friend. Surely, there must be some teachers at your work that are willing to be your friend, right?