Lonely :/

I moved to a new state two months ago and I have friends at school but we aren't close and the only people I talk to outside of school are from back home and have their own lives and friends they go out with all the time and im just kinda.. here. My family isn't really helping much because my sisters are snotty and always more worried about themselves and my mom and her boyfriend are too wrapped up in themselves and their new relationship. I have nothing to even do I just sit at home all the time and wish I could be out with my old friends back home but am jealous they're so happy and social which I feel bad that I get upset at them for it but can't help it. I've gotten really depressed because of it and started cutting again and I don't know what to do nobody understands what I'm going through and I don't have anyone. Any advice??