Most people would trry to play agressevely at first and tight during the end, because they want to get in the bubble, make the payjump, final table, etc.. But if you really see closely, most of the players who actually win tournaments, their strategy are the opposite:
- Play tight at first just big
hands because they know that in the beggining the blinds are small and a lot of immature players will go insane and push all in all the time
-As long as the tournament lasts, the blinds increases, they play more agressive, trying to steal blinds, and pushes all ins at the right time
So when most people are attacking each other going all in during the beggining and killing themselves, they are(the winners) just watching.
And when people are feeling pressured by the money, bubble, making the final table and other stuff, and playing tight, they are the ones now in scene playing agressive. Thats my opinion though, best of luck