i am new to the game and i started a mage. im at level 31 right now but i cant even do arena. because i die to fast and everyone kicks me from there cata groups because i dont have any good gear.
how am i suppose to get better/
should i make a new character...

in cata use this setup:

heal mast wep
heal mast armor
heal mast charm
charm in acc slot
mages in cata only heal
i hope ur full intel after u put first 5-10 points into vita

in arena
intel wep
intel armor
dmg charm
heal charm in acc slot

u mite want to buy a dmg charm that can kill the current lvl u are

Well i have same problem when i first started.
you are simpen need to buy new better gear, before people began to respekt you.
It's nothing whit the class to do, "exampel" : a barbarian with low dmg, all will also kick out.

my proposal is buy new gear to the price you can erford..

good luck man !!

People are cruel and self-absorbed on LS these days and because it slows them down slightly they won't help out those who need it the most.

Assuming I am not under time constraints I don't care to play with weaker people to help them out though always upgrading your gear is a good thing to do.