I'm 13 and I'm angry and depressed?

I have no friends and get teased about my weight, I'd usually vent this out through the Internet, playing games like minecraft and etc, but I have been grounded from it for a year, and I feel like anger is swelling up, but I don't like talking about my feelings, and making friends isn't easy halfway through middle school when everyone has made there friends, and when I do have a friend, I feel like a third wheel, always being replaced by someone and I see them hanging out and it makes me sad and angry to see I was just thrown out for them to hang out and go to parties, never being invited, I feel like a social outcast, I feel like I'll never fit in to anything, or have a friend, or just have fun with someone that isn't a family member or friend, I don't like going to family events, I feel like everyone is looking and judging me every second, I just don't know what I'm doing with my life anymore, it feels like it's just been wasted

Read more: I'm 13 and I'm angry and depressed?