I don’t like this weird feeling of uncertainty.

I’m a freshman in college, it’s second semester and I feel like I have no idea what I’m doing. First semester was decent, I put myself out there, made some close friends but not a big amount. I had all these expectations for myself and I didn’t meet them. I’m a stem major, I study well but it’s just so hard, the amount of material I’m supposed learn in such a quick amount of time is overwhelming. I feel really average compared to everyone in my big lecture halls. My grades were decent first semester, definitely not failing but not a 4.0. I have doubts about my future career choice constantly. I have no idea where I’m living next year. I’m kind of homesick. I feel like I’m doing everything possible to put myself out there to meet new people and study but sometimes I just want to go home and lay in my own bed. I’m forcing myself to stay on campus and hang out with friends/party on weekends even though I don’t always want to. I know going back home on weekends always won’t solve anything. Any advice? Any other organizations to join? I just hope this really weird feeling of uncertainty will go away soon.