If you´re playing a FREEroll, don´t expect to see too much good players. When you enter to a freeroll, you have to asume that on the first hour almost half of the players are going to be busted out, because that "sucky people" go all in on every hand, hoping to double up early on the tourney. So it doesn´t have to make you mad. The only thing you can do is to acept the "freerolls rules" and play by the common strategie that is "play very tight first, wait for the stupid players to get busted, and later on the tourney loosen up".
ps: did you lose today in a freeroll against one of those players?