Some people struggle with social interactions more than others. You really just have to practice. None of us are born with skills, some people just had a better coach or practiced more than you.
Drugs are not the answer. Xanax is an excellent cure for anxiety, but it will give you the same problems as drinking in excess.
Easiest way to learn a new language is to immerse yourself in it. Get a job knocking on doors.
I’ve done a job like that for 6 years and now I’m not afraid of anyone or anything on the other side of that door. I’ve seen it all. Even though I don’t know what’s coming.