It sounds like you don't have the bankroll to play with them, and therefore are starting off with less chips than them. I get that from you saying that they seem to put you all in so many times that if you get outdrawn you go bust. If you were on even terms with them and tripled your buyin, you'd only be losing a 3rd of your chips on a typical all in.

At the casino I've noticed that people that don't buy in with enough seem to have absolutely no chance to make money or even keep what they buyin with. Even if they happen to double up (which they barely ever do because they play so timidly) they're still likely to get put all in a few times after a few big hands.