Hand 1 77
Preflop and flop seem very standard. Turn would also be a call against normal sizing, but when he overbet, that obviously change things a lot. I dont think, blockers are particularly relevant, because he probably does not even open 75 from MP, and if he does, its only 75s, so at most we block 2 out of 4 nut combos.
What he has way more are sets and overpair, so there is a lot of value, that beat us, and when behind we only have 6 outs to improve. So it all boils down to, if we think, he is
bluffing often enough, or if perhaps we even want to turn our own hand into a bluff. I honestly dont know, what the "correct" play is here, and whenever that is the case, its definitely best to take the low variance route, which is to fold and preserve your chips for another situation, which is more clear and easy.
Hand 2 TT
Think its ok to fold here, because there is already a 3-bet in front of you, and you have no fold equity. It is close though, when the action is in late position. Of course its always annoying to fold and then see, you would have been ahead and won, but thats results oriented.
Hand 3 AQs
This hand is just a set-up, and there is no way, you can avoid going broke. Preflop I lean towards jamming, because with a field caller you are getting a good risk-reward. Because they can win your bounty, you are likely getting called wider than normal, but thats ok, because you have a great hand, and you need a dubble up. So its totally fine, if someone sticks it in with AJ or KQ. You actually want that to happen.
I dont like a small 3-bet, because I dont think, you are deep enough to get fold equity without committing yourself. I also think, that because of the bounty dynamic, you will get 4-bet quite a bit, and I dont want to 3-bet fold a hand as strong as AQs. So for me a 3-bet here is a jam, but it is an ok alternative to just call as well, because you are closing action.
As played I would just check-call the flop. Of course slowplaying is always a bit risky, but its a very dry board with no draws, so the only bad card, you need to dodge, is a K. My plan would then be to check-jam turn, if someone takes the bait. I think, that when you check-jam here, you are just forcing them to fold a lot of hands, that has very little equity, and only getting action from hands, that beat you, or that you coolered like KQ/QJs. And you can get action from those hands on the turn and river anyway.