Fear is ruining my social life and life in general and need advice.

So I (m20) have always had anxiety but since the pandemic it's been the worst it's ever been, And also I belive its effected my social skills/social life and could use some advice for both.

My anxiety has always been bad but it has been very bad the past 4 1/2 years and I really want to change it but need advice on how I could. It's so bad that the past couple of years my friends or family will ask me if I want to just hang out, go out to eat, go take a walk around the city or do anything like that just doing normal stuff and although sometimes I do hangout sometimes, the majority of times I end up saying no. The reason I say no so much is because of my anxiety and fear, It's like any time they ask me if I want to do something I end up getting really bad anxiety and start thinking about worst case scenarios and I'm not meaning to.

I feel like it has also ruined my social skills/social life because I feel like I am pretty much socially inept and have no social life also. Like I said earlier because the anxiety I hardly go out and do stuff because of fear. I do have like 3 friends (they're all close friends) And I'm very thankful for them, But I don't go out and do alot with them and they've offered to introduce me to some of their friends caue they know I should make more friends also but I always get to nervous.

Sorry for such a long post, but I could use advice. How can I quit living in fear all the time? How can I get better social skills/get them back? I feel like I have no life experiences like dating, making memories with friends because of fear and I really want to change this and get better and could use advice.