IN the first hand, OP would be calling, a raise to his bet, and then a 3 bet all in, so its not crazy to fold AJ there at all despite hitting the A. Without knowing the action pre flop its hard to say though.
In the 2nd hand the OP would be calling a raise, an pretty irrellevant All in and 3 bet shove, so to be honest, I think you can fold here too, but callung is not a massive mistake.
I would assume there are lots of players in this, so probs ITM already, but who knows. OP maybe?
In terms of ICM pressure, this is not really it, this is more just the fact that the value of hands you are against goes up as more players are prepared to raise or shove all in. But there is some ICM pressure as you are not a million miles away from the FT and getting towards the decent payouts.
If you want to get better advice, then posting a full hand history would be better.
I assume you know if you folded correctly or not, as you saw what your opponents had, so this maybe feels a little bit like you're hoping to say say, I folded to AK in both hands or something like that.....or maybe you would have won and you want to understand why you should have called. Either way, we need more info