Social Anxiety through the roof.

Hi, I’m Rachel and I’m 22! As far as I can remember I have had really bad social anxiety. It has gotten to the point where I don’t have many friends because I won’t talk first because I get SO freaked out. When I go to a restaurant, I have to practice my order thousands of time in my head.. I won’t call places even if it’s just to order food. It just stresses me out a lot because I don’t know how to get over it. I honestly try, but I just can’t. Does anyone know any tips to become less socially awkward?