Hey! I transferred here the spring semester of my freshmen year and I felt the same way since everyone already seemed to be adjusted and already were in their friend groups. It gets better!! It’s definitely going to take more than a week but just try to be as social as you can. There are a bunch of clubs on campus that offer a lot of social activities/parties, there’s literally a club for everyone. I eventually found my group of friends and it was just stepping out of my comfort zone and just asking people if they wanted to hang out/talked to them in class/asked if they wanted to go out. It will take some time but you will find your niche! Wish you the best!