Embarrasing River Call

I butchered this hand.

Preflop is obviously fine. I think flop is ok too, I can't raise and fold to a 3-bet, and when he just calls a raise I am probably not doing that great against his range. Folding is not an option, so calling is fine.

On the turn though, I need to bet 100% when he checks this blank. I don't want to give a free card to draws, and I want to get value from worse Ax and 9x hands. I knew this was a mistake as I was checking behind.

When he overbets river, he polarizes his range to flushes/air. He's not doing this with 2pr because my range includes FD's as well, imo he'd most likely make a standard size bet with anything that a flush beats. I doubt anyone at NL10 is overbet bluffing nearly often enough to make a call correct here, he would need to be bluffing upwards of 37% of the time, which is just incredibly unlikely, especially on this board. I need to fold here always, and I knew that while the hand was unfolding. I make bad bad calls way too often. It really needs to stop if I want to be any good at this game.

Poker Stars $0.05/$0.10 No Limit Hold'em - 6 players - View hand 569152
The Official DeucesCracked.com Hand History Converter

CO: $9.45
BTN: $7.45
SB: $15.25
BB: $11.80
UTG: $14.70
Hero (MP): $10.15

Pre Flop: ($0.15) Hero is MP with A Q
1 fold, Hero raises to $0.30, 2 folds, SB calls $0.25, 1 fold

Flop: ($0.70) 9 A 2 (2 players)
SB bets $0.40, Hero calls $0.40

Turn: ($1.50) 4 (2 players)
SB checks, Hero checks

River: ($1.50) 8 (2 players)
SB bets $2, Hero calls $2

Final Pot: $5.50
SB shows 7 6 (a flush, Ace high)
Hero mucks A Q
SB wins $5.25
(Rake: $0.25)