Early stages just play really tight and when you play, make sure it's for value. I know people, especially on
freerolls, like to shove all in a lot of time even with a marginal hand, but keep solid on your strategy, just think that it's free money when you get a hand in that spot.
So, you played very tight and now the blinds are incresing, it must be about level 8 or so, and you weren't lucky enough to get Aces Kings or Queens, your best hand till now was ATo and you had to fold cause you were out of position, so it's time for our B plan, let's put some gas on our game, that doesn't mean play any two in position, unless you think it's a good spot and have sure they will fold, but trying to steal blinds from Button and Cutoff is very profitable in this part of the tournament, so do it. If it's not working, either you are very unlucky and today it's not your day or there is something wrong with your game and perception, but now, your C plan here starts when you have about 10BB, so, what you do now? It's easy, open those push/fold charts you can find anywhere on the internet, and just shove all in when you fit in it.