hi kroniqu.

I don't think it has to do with your adopted family. Many people who are not adopted also go through problems with their family.

Anyway, I've learned that people don't easily change. If you dislike people, and they are not going to change, you better move on with your life.

Find a place of your own, do everything you can to overcome your social anxiety (read a lot of good self-help books and put them into practice). Build your own group of friends. I don't think your mother is going to change, mine didn't at least.

Look forward to a better life on your own with your own friends, without constant worries about your family.