There's a solution for such problems. Clans, especially as a kid being in a clan would solve most of the problem for you. Most others your age will be getting on and off around the same time, and I doubt they're going to mock you for being the same age as them. My other advice is to grow some thicker skin. No matter who you are or what you do someone somewhere will have a problem with it. I once got kicked for having a southern accent, people are stupid af. So find some online friends.