Hello there, and Welcome!
just remember you always have friends here.
You're a little younger than me, but I know how you feel. When I was a freshmen, my friends from HS kinda ditched me which forced me to make new friends. I know people say join a club or whatever, but it truly isn't that easy! However, you need to take the first step. If someone looks smiley and friendly enough to have small talk with, take advantage of it.
I made a few truly fantastic friends in college I still talk to. It's hard, but it's worth it. I'm sure this apartment thing had nothing to do with you. And even if it did, that just tells you that they're not people you should waste your time associating with. So many brilliant, lonely, anxious, or whatver people out there need a friend. Talk to someone! Make someones day! I know it's hard, believe me I know, but the friends I started talking to are some of the best I've ever had.
And liek getting by said, true good friends take a while to come across. Don't lose hope yet. IT's still very early
"Tell them to look up. Tell them to remember the stars."