To be completely honest i think i was best at video games around 13 ish so unless you suck horribly, i doubt age is your problem there. They probably just dont like high pitched voices or having to hear the dumb things 13 year olds talk about (not sayin you're dumb, but we were all 13 once and we were all pretty dumb then), i guess im fine with gaming with younger gamers... We were all once younger gamers. Just be mature dude and older people will respect you. Other than that you just gotta wait til your balls drop.