As you are blocking the flush and the full houses I think that you have a clear bet on the river. I would then fold to a raise as people tend to underbluff this spot.

I like a check/call given that many straight draws have missed. I would guess that villain bets flush draws on the flop and you don´t lose a lot of value against Qx type of hands.

Grunching.

I don't really like the turn sizing. I think that strengthening villain's range so much out of position while bloating the pot is a mistake. We have trips weak kicker with a lot of bad rivers to come.

I don't really like betting the river, especially after villain's turn calls rate to be very strong except for the hands they can't easily call the river with.

I'd go with a villain-dependent check/call or check/fold, as-played. I just don't expect to win super often if villain is volunteering another bet on this river.

Yea, since the board is paired it's unusual to make a bluff here, unless he has a good read on you,also maybe a smaller sizing on the turn
as it played out you made the correct choice in my opinion