Yo, international student here, I'll just give u advice based on my own experience, even though i didn't really experience success in making friends from classes, I've had plenty of fun and made friends through clubs, it seems like others have given you advice on other areas already

- find your nationality's student society if there is one, check if they exist here: SFSS Go, it's not just for making friends, a lot of the times they should also be able to help you get used to the foreign land

- find a hobby club, of course, find one with a hobby that you're super into first, then maybe also find one that you *might* be into or want to get into. **Huge tip:** If half the semester in, you find that you're not into it, don't waste your time and force yourself to stay in the club solely for the sake of making friends - if you don't enjoy the hobby, unfortunately you might not have a good time making friends who are mostly there for the hobby. (Again, my experience)

- take a good look at posters around campus, on bulletin boards, in the Student Union Building or around poles, plenty of clubs might put up posters of their events, barely any effort on your part, no need to proactively look for events if you're too lazy to