I'm check folding this river and shoving on a fourth spade with this hand

Possibly drawing dead, there can be arguments made for x/folding right there. I think river depends on villains turn call to WTSD ratio as the 5c doesnt help anyones ranges.

The turn really does not change very much. Because of the 3bet pre hes not going to give you as many flush draws in your range. We have no idea what his calling range here is preflop given you are unknown to each other. Wp on the flop but ott I don't think he has much in his folding range anymore. Besides AJ I cannot think of many hands that would be in his range that did not fold the flop that will now fold the turn. In fact he can continue with even more hands then before with his pair+big spades now. The river yet again changes nothing effectively about the board. I know you bet on the turn planning to bet certain rivers but I think a check/fold ott should be favored anyway given how strong his range becomes once he calls the flop and how little is left in his folding range.

our blockers sucks OTR.. We only block air pretty much and we should have like ATo/KTo/AKo kind of hands to jam the river with.. Like we dont block a single hand that are calling river but we prob block a decent ammount that's folding 100%