First point; don't target the 'good players' when you have no info on them; they have the edge, not you here.

It is weird it limped through, I think he played bad by not opening IP IMO.

Also with your XR line, you have no info since it was limped preflop so his range could be anything.... but since it was limped pre no pocket pairs in his hand. Unlikely A9, K9, Q9, J9 so I think he'd open rather than limp. So T9, 98, 97, 96, 57, 56, 54, 53 would be his realistic range here. The fact he bets that board into 3 other players makes me think he has a piece and not air... since the pot was limped he could x behind and wait to bet turn as if no one has anything, same result on the turn.

I am pretty sure he folds a lot of his 9x on the flop but not all, so it leaves you barreling against the top of his range there... which is often trips plus against a good player. So you XR the flop 50k to win the pot of around 50k. Fine in itself if you give up there, but then you end up risking your entire tournament life, your stack for that 50k pot on the flop.

I am curious to whether he has a 5 there or not because I think it should be a call by him if he does. What are you even representing? You XR the flop instead of donking.. so in your mind you are repping a 5 and not a cheesy 9x hand. The turn then kills the hand you are repping... so you then barrel that turn which doesn't make sense AND jam river.

Also betting 1/3 pot on the turn? his entire flop calling range should call that turn so you have to jam all rivers which his 9s obviously never fold... and his 5s are in a tough spot but a decent hand reader should be able to call you out there.

Also I appreciate you had a GS on the flop but on a paired board you get a lot of RIO and are rarely good boards to barrel your entire stack on.

It feels like you got caught up in the hand and just went for it without thinking each street through - barreling for the sake of barreling.

tl;dr: XR flop is a fine move if you put the villain on weak. As soon as villain calls their range is strong, only continue if you pick up equity and believe you can get a fold since you know villain is capable of floating flop light. Eg any heart, some T/J turns. If you are barreling more than that you are basically just spewing and 'hoping' to get a fold based on no other reason than you just kept betting.

Please feel free to reply with your thoughts to the above, if you did have any reads or a plan for the entire hand that I missed.

P.S. Welcome to the RIO community, and although you did post this hand in the right section I recommend reposting under the MTT tabs as most people still post live hands there anyway and you will get many more replies.