Universities here don't have official clubs. There are some shenanigans people get into, but they aren't sponsored or even organized unless they serve some societal or educational purpose. It's also a bit hard to learn about them. My best bet is paying attention to the boards in the corridors and at the library because the good ol' A4 sheet ad is immortal. Even then it's rare for new stuff to get advertised. Maybe if I make a habit of going earlier once a week to scour every campus for new ads.

I can't get into more classes right now. I can only change my classes at the start of each semester and for mental health reasons I only take 2, max 3 classes at once. The issue is that all my teachers lumped their 4 classes in the week to be lectured consecutively, which is why I only go two days on a week.

How far is the commute?

40 minutes on the bus, 15 on a private taxi. My city has good traffic but even the bus is a bit expensive. Each ride is about a minimum hourly wage and the private taxi is double that. I won't go by bike because I would have to cross two avenues and a busy highway. But going to university just to hang about scouting for people feels silly.

Join something that is obviously designed for another major. IEEE or a poetry club or cuisine club.

That's actually a good idea, since I mingle way better with humanities students than my fellow compsci students.

Thanks for your answer :)