Dear Chris,
I am sorry to hear that you are having trouble fitting in at your new school. Such problems are quite normal. Perhaps the following suggestions may be helpful.
First, I think you may need to communicate with your classmates as much as possible. In this way, you will get to know each other better. Second, it might be a good idea for you to take part in more activities, which usually involve teamwork and interactions with other students and are therefore good for developing friendly relationships. Lastly, faced with some tough problems, you might consider asking your teachers, who can usually offer you some sensible suggestions.
I sincerely hope my advice will be of some help to you. If there is anything more I can do to help, please let me know.