OP, try not to stress about sex. I understand how it is in your situation because I was once there too, but the best advice I can give is to focus on finding a person rather than focusing on sex specifically. If you just want to experience sex, get an escort and most of the time they know what they're doing. But in the end if you are just searching for sex, you will feel empty at some point afterwards. Figure out what you want in a woman and then attempt to start a relationship. Also for the anxiety, try and do things that help to naturally relieve it. Maybe some kind of exercise you like?