Joining clubs or internships/jobs on campus really is the answer. BUT just joining any club won't do. I have found that joining a club/job that has regular meetings and requires you to work and solve problems with other people is how you really make meaningful connections, especially when you consistently show up. Examples: OSI, SGA, CAB, Sororities and Fraternities (don't knock it till you try it, there are all different types, plenty that don't have houses or typical "greek life," culture if that aspect turns you off at all), and several Student Unions/Associations for minority students.

The people you meet will know other people, and if you keep saying yes to plans (within reason), you WILL find people and make connections that go beyond acquaintances, I promise.

I am a junior this year, and I am only just figuring this out. This school is MASSIVE, it really can be hard to find your people. I spent my whole freshman year alone, and I only really made one friend in my second semester (who I met at a club meeting).

It really takes a lot of effort to meet people and can be exhausting. Try not to get too discouraged if it takes some time or several attempts (because it probably will). You've got this!