How to become sociable and remove the clamps in the body

I am 29 years old man Hello tell me how to become more open sociable with girls. It's just that when I'm 1 on 1 with a girl it's easy to talk. And when there are people around or in the room, I feel like I'm being squeezed. Yes, there are fears of some kind of anxiety. Even though I go on dates 100 times, it's still the same. I already communicate through the force, or it's hard to hug me there, as if it shackles me . What do you recommend, maybe some exercises or a book to read. It's just that I still keep emotions in myself can it be because of this or the fear that girls used to yell at me ?