I also have anxiety. The way you deal with it is to talk with strangers. Start by expressing yourself more with the people you are already comfortable with. Something you might normally not share. Then start with chit chat with people who are less familiar. You will be chatting comfortably with people you don't know in no time. Isolating yourself is the wrong way and will lead you to dark places. I know. I'm better. It's scary, uncomfortable and totally worth it.