These may be your real issues with your current school rather than academics.
The roommate issue can be solved in the near future.
Excluding yourself from others due to an incident early on in your time at UNC almost certainly can be overcome with time, personal growth, and a change of environment. UNC-Chapel Hill is large enough to afford one opportunities to change his/her immediate environment.
My suggestion is to send out transfer applications while also considering how you can make your time at UNC more comfortable & enjoyable.
If counseling is available, consider taking advantage of this opportunity; if not, then talk to your advisor and ask for suggestions regarding your concerns.