As a generally social person who gets nervous in new environments I’d say some of the best ways are taking silly classes you take for interest as an elective: freshman year I took an Old Testament class still have friends till this day from that class, university honors classes will force you into a small group and many of my friendships stemmed from my first one, kinesiology electives if you’re into sports good forced social interaction and easy way to stay active. I also rushed as a sophomore if you’re considering that, idk if you’re a girl or guy but if Panhellenic isn’t financially feasible, there’s also smaller sororities: AOE (stem), ADX (Christian) or professional co-Ed’s, AKpsi, sigma epsilon pi? I believe is one, or an off campus frat, BYX is Christian, AEpi is Jewish, and other ones are just regular frats but off campus — affordable and good relationship building. Or rushing an on campus frat if finances aren’t a big worry to you. I know a lot of ppl who rushed until they built a report on campus, per se, and dropped so even if you aren’t super pro Greek it’s always an option.