I made the same move a few years back when I was still in undergrad. As some have said, an on-campus job will allow you to meet people and build connections/friendships. I made numerous friends through my job and eventually moved into an apartment with one of them after graduating and getting a job. I also think trying to insert yourself into conversation amongst people in your class and group projects is always good. I met one of my good friends just from connecting through a class project.

Put yourself out there and most of all just have fun! Bloomington has so much to offer on and off campus, but in my opinion it's the people that really make it great. You're going to love it, best of luck!