Playing a 1/2 game with a soft field, players are on the passive side.
Throughout the game my opponents made bad folds when I put the pressure.

In this hand UTG straddles for 5. UTG+1 calls. Folds to me in MP and I raise to 25 (Started the hand with about 1000 chips).

BB, the straddler and the limper all call.

4way to a flop of 36T all diamonds (No Qd in my hand).
Pot: 103.

Everyone checks to me and I cbet 65 to deny equity from any diamonds.
Everyone folds except UTG+1 who check-raises to 150.
Given the good price I'm getting I call.

This player started the hand with about 1k chips as well. He's pretty fishy so once he bets aggressively I have to assume he has a hand

Turn is the Kd, we both check.
Pot: 403

River is a blank and he checks again. Should I turn my QQ into a bluff?
Given my range I could have high diamonds in my hand. I couldn't pull the trigger so I checked back. What do you think?

smaller flop and fold ap
x river

Fold flop. As played, yes lets bet 1/2 pot and I think he folds most hands w/o a diamond.

What kind of hand would you be repping with a river bluff, and what kind of hand are you anticipating getting to fold but dont already beat? You have sdv, just check it back

let's not help him make more money than he needs to

sets, flushes, mby some Ad raise flop 4way
what exactly is the fish going to fold to a 1/2p river bet?

AdAx/QdQx ... Sets and baby flushes should fold and make up a decent portion of his range.

gl getting the fish to fold any diamond to a small bet

Hmm maybe but he only needs to fold 33% of time to be profitable. I also hope then that you are betting 99+ w/ a diamond for value.

I dislike a lot your play, bet callin the flop is terrible, I would have start with a check back ready to give up that hand or play a small pot. on the river I dont go fancy and try to make him fold a flush or set

Not really looking to dump another $150 into this pot in any circumstance, and you are actually considering putting more in, i think that's not good

I might check fold all 3 streets, or maybe check call once or twice based on the player and size

Maybe you can bet flop, but i probably fold to raises and any continued aggression

As played, check river, no one is folding and so many people check strong flushes here hoping to induce bets

Just a bad runout for our hand, can't win them all

Of course check. There’s nothing to suggest you don’t have enough SDV where EV checking is less than EV betting (bluffing).

Not sure how well this works for you, but had you been OOP and the hand went bet-c, Ck ck, ck ck, you’d be quite content.

Bet small otr and get hero'ed by Tx

When this thought comes into your mind when you get raised in any situation, you need to given it several more thoughts before you call. There's a reason why people give you a good price"

If you want to bluff here you probably need to bet both Turn and River.

This comes down to whether you think the Villain will fold to pressure.