Me fits weak hands. There is no need to waste chips. Wait for a better hand to arrive. In the early stages of the tournament, the blinds aren't that big so you don't lose much anyway. There is no point in bluffing because the risk is not proportional to the profit.
The early stage is great for expanding the range of hands you play. Don't wait, only a strong hand to play with. The blinds allow you to play very wide, don't be afraid to go into the hand without having a very strong hand, but do not forget that your opponents also have the opportunity to expand the range for the game. And the main thing is right, do not turn the early stage into a stupid game, when you start playing any hands and forget about everything.. Be careful, but you should not insure yourself very much at the table.
I wouldn't play bad hands in the early stages of the tournament. The blinds are low. You usually have enough blinds left and you don't have to stress yourself accumulating chips. Most of the time, those who have a lot of chips in the early stages of the tournament are out early. I wouldn't defend the blind with bad hands either. It's not worth it when the blinds are small. Only when I'm under 25 blinds would I start thinking about blind stealing and steal raises. But I still think you shouldn't have bad hands to steal blinds. Face cards, suited connectors or small pocket pairs should be.