I need help getting out of my comfort zone and making friends. (Rant but also need help/advice)

This entire school year I told myself I was gonna branch out, stop being socially awkward and talk to people and make friends. The summer is in 7 weeks and since then I’ve made next to no friends. In my classes there’s either no opportunities to talk to new people, my “friend group” from early last year is awkward to talk to for more than two minutes even as hard as I try to talk to them and not make it awkward. I can’t talk to my crush because I get so scared just to say anything to her and have no reason or opportunities to actually talk to her. I’m usually excited for the summer but I’m gonna have nobody to hang out with just like last summer. I want to have friends and be confident so bad but I just can’t. I’m so socially awkward and so anxious that I need to build up courage to get a tissue in class. Sorry for the rant but can someone help me