how can i avoid these hands? i seem to always be screwed over when these come.. i dont have the hand history, but i remember what happen. Can i avoid these in the future?

Scenario #1: I'm in big blind and get dealt AA, 3-4 limpers call the BB and i raise it 5x the Big Blind (BB = 20.. i put it to 100) I get 2 callers, and the flop comes j62 rainbow, i feel im in no trouble so i check.
The next person bets and the next person calls, i re-raise it triple what they bet to take down the big enough pot already. The first person calls and the second re-raises. I look at the board , no straight draw no flush draw, i figure he probably has ace jack or something so i re-raise him, by this time 70% of my stack is all in so i am pot committed, he goes all in and i of course call. He flips over 66 and i bust out. What could i have done differently? AA should be my winning hand but the way i play it i bust out, im not afraid to let go of it, but there was no flush/no straight/no pair on the board. What should i do differntly next time this happens? Note: it's a 10 buck Sit n Go.


Scenario #2: Im in early position (UTG+3) and get JJ. Some guy raises x4 the BB to 80. I re-raise him to 160 to see where i stand, someone in later position flat calls my 160 and everyone else folds. I figure if he had QQ KK AA he would have re-raised my initial raise and flat called. A great flop comes for me that consists of 10, 9, 4 rainbow. No flush draw out there but a straight draw. Since im first to act i bet 70% of the pot, roughly 300 chips. He promptly re-raises me to 700. I felt he did not have QQ KK AA so i push him and he calls and flips over 99. This was the second time a set knocked me out in five minutes to my overpair. How can i avoid yet another hand like this? Should i let go on the re-raise (by the time he re-raised me already 35% of my chips were in the pot).

What should i do when situations like this come? Just pray they don't have the set? Or my main question is how to avoid these situations? I Don't slowplay big pocket pairs so im clueless. Should i always suspect the set?