Brandon can and always will be a clicky little city...but once you move here and start working someplace I'm sure you may meet a few people your age that you can hang with.
Me personally I don't like this city but do to circumstances I have about another year here and then im gone back to the country and the peace and quiet.
Its never bothered me nor have I took the initiative to bother making friends, quite frankly because I don't like people all that much. lol that's why I got a dog.
But you have taken the right steps to look for people to hang with by starting this thread, good luck to you, at 20 years old im sure you will find an accepting group that will welcome you.