I think you're just nervous, which is okay.
I certainly embarassed myself in college a few times. It's... embarassing. But it's okay!
I have no idea wtf you're doing but when I was in college I did stupid shit like talk to girls, mention the Beatles, and then be overly-fake happy if they said they liked the Beatles, too. Clearly we were soulmates for liking one of the most popular, generic bands in history together. Corny AF. People saw that, and saw me acting psuedosuave and like a douche. Which I was at the time, and perhaps still am.
You don't need to do all that, I did it for you and confirm I was trying real hard. Why not just go up to people and say Hi, how's today going? and go from there. You can tell pretty early on if people want to talk.
I remember one time, in the quad, I managed to grab my nuts and kneel down on the grass next to a big tittied bitch, don't call them bitches by the way, and I said "Hey, I was passing by and you looked really cute!" Man, I was nervous, and she was beautiful. I couldn't believe it. She was actually super nice to me, but I had no idea what to do after that. It's kind of a happy memory now.
Also, maybe you don't want to fuck around at school, and that's fine too. Maybe even better, in a way-- go find somewhere else to fuck around, because the challenge of finding that is super interesting. You're going to need to do that after college anyway, and college is mostly a waste of time and matters so little in the grand scheme of things. Could be good for your manhood to go learn how to hunt in the wild, if you catch my drift, but it certainly wont be as easy or convenient.
Whatever you choose to do, I love you, and just be calm and nice and polite and read the body language my man and you'll be fine. Don't try to pet a bitch that's snarling its teeth, and I mean the dog in this metaphor so it's fine.
In life, in anything you do, if that thing is important, somebody, somewhere, is going to see you fail. Sometimes groups of people. Accept this across all domains. It is your destiny to sometimes make a spectacle and an ass of yourself. Join us.