Ask HN: I'm making like 0 friends at college, how to fix it?

I talk to some people in classes and we're pleasant to each other but haven't gotten beyond acquaintance with any of them. I know some people from a club I'm in but don't see them outside of that. It doesn't help that I'm a computer science major and I don't have a lot of interests that CS majors have (anime, video games, social media, etc.) Advice on how to connect better with people?

I'm busy a lot of the time so don't think about this. But I've heard everybody talking about Halloween costumes in the past few days and realized I don't need one cause I'll be sitting inside alone on Halloween. I'd like to start fixing this but don't know how.

Edit: some people have asked, I'm a sophomore. Seems like a lot of people already formed their social groups last year.