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Big schools are hard to navigate. It's a change, but keep your head up. Some of what you write is VERY normal... getting confused, lost, can't find things, drunk roomates, full-of-themselves upperclassman. You can find your path!

1. Goto the student union and spend a couple hours looking at ALL THE CLUBS. Join one or two.

2. Sign up to do charity work. There will be organizations that do all kinds of charity. Chairty work brings people together. So, maybe the college will have a group that does Habit For Humanity.

3. Take a gym class. Seriously. Sign up for yoga or dance or tennis or badmitton. For fun.

4. Get a job on-campus. I worked in the mailroom. It was a blast! We got to see all the main that came in and it was a bunch a students with a couple adult supervisors. I also worked in the cafeteria, but that was less fun.

5. If you are religious or spiritual, find a group on campus (catholic, baptist, jewish, mormon, muslim, etc..) These groups are usually very welcoming.

This is how I got my circle of friends. It takes time.
In my experience freshman roommates usually don't last as friends.

Good luck. Ask more if you want...