Thanks for the replies; that helps. Other posters are correct that to meet other Catholics, you need to go where the Catholics are–Mass, a Newman Center, or other Catholic club on campus. Unless you’re in a really small nonCatholic school in the middle of nowhere, there are some other Catholics out there!
But it also sounds like you’re feeling burnt out, rather than bored only. While pursuing social opportunities, also make time to do something you find relaxing or stimulating. Walking is free and healthy; if your school has a gym or low-key sports, you could try there; if you like reading, check out your library. (They can order stuff from other libraries, so if you find a really good series you can get more than the books available at your campus library.)
I know it sounds weird to suggest things that aren’t actively looking for friends, and that take up a precious resource (time). But it’s good to find happiness by yourself, along with looking for friends, and it could actually lead you to make new ones!
Finally, try to be like the friend you want. If you want Catholic friends well grounded in their faith, go to Mass, pray, read the Bible and maybe some other improving books. Like attracts like.
It sounds like this is a stressful time. I wish you the best.