There is an age difference, but here goes. When my son was uncomfortably aware of being excluded by some of his peers who might have been friends, I suggested - based on my own experience - that he announce the start of his own group.
If you play Scrabble in Finnish, say, or are into No plays, set up a rendezvous, post notices around campus or in the student newspaper if any, and wait. May take a few tries, but if there are others around they will eventually come out to find you.