I would have just went for 3 streets of value bet folding on every street. What was the reason for the check?

Pre: I like three betting here and I like your sizing too.

Flop: I'm betting here for value rather than check calling.

Turn: Not in love with the third heart coming out but I would continue betting here if flop has gone bet/call with my above line. As played I probably check call here now.

River: Same as turn, I would continue betting myself if villain had called my above bets, but as played I opt for the check call.

Folding at any point as played is completely out of the question.

The squeeze pre is standard against unknowns.

Similar to other hands you posted, it's just better to keep control here and bet flop and turn for value.

On the river if we bet twice we can shove the river if we want to but it's likely to be a slight overplay without reads. Against a lot of players two streets can be enough value, but if you're in a game where players call down too light then making a small value bet and folding to a shove is fine. Nearly all villains won't ever be turning any showdown value into a bluff, nor will they be shoving KQ for value, so don't worry about putting yourself in a tough spot.