First hand played at this table for me, 30 from the money in a 100€ winamax series event

Stacks:
UTG - Hero (98687)
CO - Pr4yF0rfi5h (125705)
BTN - stakeleux24 (112482)
SB - fratus16 (62478)
BB - Kitbul (134059)

Blinds: 1250/2500

Preflop: (3750, 5 players) Hero is UTG with T 2 A A
Hero raises to 8750, 3 folds, Kitbul calls 6250

Flop: 3 5 2 (18750, 2 players)
Kitbul checks, Hero checks

Turn: 3 (18750, 2 players)
Kitbul bets 7500, Hero calls 7500

River: 5 (33750, 2 players)
Kitbul bets 15000, Hero?

If he is defending his BB super wide, fold, if he isn't defending wide, call. Odd spot though, your range is very aces heavy and bluffing into that is strange

Little bonus question: raise turn?

What would you be repping with your UTG opening range and flop check, followed by a turn raise?

As for the river, I have two conflicting thoughts, given that he likely knows you missed the flop:
1. He puts you on an overpair, so he's betting small on both streets try to encourage you to bluff-catch.
2. He figures that as you've missed the board a small bet is as likely to get you to fold as a bigger bet, so he gets a good price on his bluff. When you call the turn, you look like you have a draw, most likely a flush draw. All the draws miss on the river, so the river bet sizing is probably chosen to get you to fold all the missed draws; again, a smaller bet is as good as a larger bet if you have no showdown value.

I've not played tourneys so I don't know how the general dynamic would lean towards one or the other. Would a competent player take the bluff line first hand into an unknown, though? I wouldn't expect that to happen frequently in a cash game, but it might be different in a tourney. If he doesn't know anything about you, you could be opening 30% UTG.

Not an easy spot he played well nice sizeing otr. I mean obv he could bluff w missed fds etc. But a lot of hands can beat us so i would sigh fold otr.

Pretty sure raising turn is intended as a value/protection raise. We're ahead a good amount here since villain doesn't have many 3x or straights in his range and when he sizes it so small it looks like he's making a blocking type bet to set his own river price (since if he checks, we'll likely bet turn fairly large knowing we're ahead a ton)

Problem comes when he shoves on you. Obv you need to have a plan if you are raising turn since a good villain might read your hand for what it is and will have some semi-bluffs in his range when he shoves turn.

Hero calls 15000

Total Pot : 63750
Hero shows T 2 A A (Two pairs : Aces and 5)
Kitbul shows 7 7 5 9 (Trips of 5)

now would be very interesting to know his plan if he does not hit a 5 or a 7, and if he hits the flush

his turnbet seems very bad with that hand

why? should it matter what his cards are in this spot when he bets given his range advantage?