If you fold AJ, you win anyway. I'm starting from AJ. But call, with AJ, you can lose. Therefore, it is more reasonable to throw off, just as if there was an AQ hand. Again, it depends on the situation, the bankroll, and a number of other reasons.
Think before each attitude in poker, study about range of hands, positions, stake, value and bluff, and the stages of the tournament.
Paying an allin at the beginning of a tournament with such a hand without reading and without information about the game will make you lose in the long run, the best thing to do are wait for the best opportunities.
From what i SEE ITS the beggining of the tournament YOU ca-n not put thouse player on a starting hand. YOU dont know-how They play loose or tight. And Risking all in blindfull was not a opțion S-o fold.