you just have to put yourself out there and meet people..I always started with people who were maybe sitting alone at lunch and start a conversation..tell them your name and what you find cool...then meet someone new the next day..a wise man once said.. " of the thousands of people I've met in MT lifetime ..my true friends I can count on one hand....good luck
Making a new best friend is very much like meeting a soulmate. It happens rarely and when does you know pretty fast. Make sure though that you have shared values , don't get talked into things that are wrong for you like drugs or drinking. If someone does that , tries to get you to do things that go against who you are, they are not friends. They are users.