@Ajpat123: I actually ended up going to the block party alone last year - The Chainsmokers were here and it was so much fun. It was probably one of the best concerts I’ve ever been to. So yes, I would say go alone and start hanging out with some people there. Maybe I’ll see you around later tonight :).
Agree with everyone else about the clubs - most of them won’t even have meetings until next week, and even then, you can still join later on in the semester. I’d also recommend looking into joining some time of THON org or committee, that’s another great way to meet a lot of people, in addition to being a part of a great cause.
Also I’d like to add that a lot of the people I eventually became friends with freshman year were people I met at the commons watching football games. If sports isn’t your thing, try participating in HUB late night activities or activities with the rest of your floor. If you keep making an effort, eventually friends will come.