river bet is too thin i think, even though you made a boat
What hands you expect MP to have when he bets, c/C turn?
and what of those hands you get called by

lol how is river bet too thin. You got a FH, when there are flushes and straight on the board. Not only do you have a FH, you got a strong FH and can still get value from even worse FH! Losing tons of value by not betting here imo. Especially since OTT villain may not expect you to be betting with two pairs or sets, so can find more calls with flushes/straights. + They always always pay off with A4, 54, 64 which are worse FH)

I agree with Xptboy and I also think the size is ok. His range seem inelastic, meaning he will call a big bet as likely as a small bet. I think you played the hand great!

EDIT Was to hasty, HelloImWayne is probably right in that checking the turn is best. He won't fold a straight or flush to one bet and if he has a wrap, we're ahead but we can't protect to just that hand in my opinion.

I would play this the same apart from i would check back this turn.

Turn is an interesting situation. I'm not sure if betting for value/protection is best or checking is best. But my intuition would say to bet. Why? Because we hold the nut flush blocker, therefore meaning that we need to fear a XR much less often, and also we can use our hand as a great hand to call vs a XR as a bluffcatcher in such a case. The other benefit of betting would be to set our own price OTT, and not have to call a larger bet OTR.

So I believe I would bet OTT to still get value from some worse hands, to deny equity from some straight draws, and to make it simpler to play by not having to call a big bet OTR. But if I wanted to make such a bet I believe I could bet an even smaller size a bit smaller than halfpot. But I don't mind checking either and could see it as being the GTO way to play, but exploitatively vs such a weak field (and tbh even at higher stakes I'd prolly play same), I believe simply betting is best and easiest.

Anyways, OTR whether we checked or bet OTT, it's a clear valuebet.

Thank you guys. A lot of good points and comments. I believe since we hold nut flush blocker it's a bet, without this key card, we almost always have to check, we might bet vs very passive caller and weak player, sometimes vs agro opp we might get check raised with nut blocker.if we bet.