How can I make guy friends?

I am a new college freshman. In high school I had mainly girl friends and while there is no problem with that I told myself that in college I wanted to have a group of guy friends instead. So far it hasn’t been going that way though. I have made only girl friends so far and I really would like it if there was a group of guys I could hang with. I am friends with my roommate and he made a group of guy friends on campus. I have tried going to parties with them and hanging out with them but I just feel very out of place to be honest.

Yesterday for example I tried going to a football game with my roommate and his guy friends. I dapped all of them up but first of all there was one guy in the group that I just think doesn’t like me for whatever reason. I had held my hand up waiting for him to dap me up and he looked directly at my hand, looked at me and dapped up the next person. This same thing has happened anytime I see him so he has to not like me for whatever reason. Anyways with his guy friends they mainly just talk about girls and sex from what I’ve seen. I do like girls and sex but can’t we talk about anything different. I was trying to get in on their conversation and I just felt ignored so I left the football game because I felt out of place as someone in the group obviously didn’t like me for some reason and everything I was saying was being ignored.

The other times I have hung out with my roommates guy friend group this same thing happened where I was trying to contribute to the conversation but I was being ignored so I ended up leaving or hanging out with somebody else. When I hang out with my roommate alone it’s pretty cool but I just can’t do the group stuff. I feel like I am upset over nothing I mean I have friends just very few guy friends. But the fact I have so few guy friends sort of makes me depressed. I want to join clubs where there are more guys for me to hang out with but I am premed so I am very busy with research and relevant organizations and volunteering already. My dream would be to join a D9 fraternity but if I can’t make any guy friends in a normal social setting I don’t even know if it’s worth wasting my time like that.

I wish I didn’t care so much about having guy friends but I do. How can I make guy friends as a guy?