Tournament surviving is an art, you have to do big folds and play carefully in the begenning when deep stacked, especilly with medium pocket pairs 8s, 9s, 10s, Js if you get some action R/3Bet/All-in.
Try to play small pots so that you can see some flops cheaply, and muck your hand easily.
Don't fall in love with your hand, like AA and the flop is very wet 89T all same color.