Sb is bigger fish then me so range is kind of any pp and god knows what more. Dont feel good at all how i played this hand. Just fold hand pre? Donk otf makes any sense? Turn can be counted for thin value bet?

PokerStars Zoom, Hold'em No Limit - $0.05/$0.10 ($0.01 ante) - 6 players
Hand delivered by Upswing Poker

UTG: $23.34 (233 bb)
MP: $14.65 (147 bb)
CO (Hero): $12.24 (122 bb)
BU: $11.64 (116 bb)
SB: $11.26 (113 bb)
BB: $9.98 (100 bb)

Pre-Flop: ($0.21) Hero is CO with 9♠ 9♣
1 fold, MP raises to $0.34, Hero 3-bets to $1, 1 fold, SB calls $0.95, 1 fold, MP 4-bets to $2.50, Hero calls $1.50, SB calls $1.50

Flop: ($7.66) 4♦ 7♣ 3♣ (3 players)
SB checks, MP checks, Hero bets $1.90, SB calls $1.90, MP folds

Turn: ($11.46) 2♥ (2 players)
SB checks, Hero bets $7.66, SB calls $6.85 (all-in)

You can't block bet or donk bet in last position. What was the reason for your bet?

Against MPs possible range check my hand has fine equity that is very voulnarable. Tho i open my self to face a jam and again question my self. SB has capped wide range running at 37/11. Any sets raises and ott i can still get value from pair of 5s, 6s, 8s and fds. but again 9s is probably weakest pp i can have ott and should go to bluff cathing/folding range.... God this poker thing is confusing.

SB isn't capped if they can have sets, checking range is standard for SB. SB can also have TT-QQ. MP is pretty capped as you'd think strong hands would bet v 2.

While betting gets you some protection against overcards, you don't really get much protection against anything betting this small and your hand is too weak v these 2 ranges imo.

I would take the free card, on the turn you got you can bet turn if both check to you.

MP's preflop action screams strength and we need to proceed with a lot of caution. i get the vulnerable SDV argument but we want to XB a decent enough frequency here on the flop.

As played however, the real threat in this hand has got out the way and we are left with the whopper who CC your 3B from the SB.

SB's assigned range is accurately described as PP's + "god knows what more". from the PP range we get value from 88's, value owned from 1010-(QQ?) and value from all the random 7x, FD's/whatever else he feels like punting off with.

Goes without saying that had SB folded and MP called this action would be disastrous but im not hating the jam vs SB. im going with "its close". Personally i lean towards bluff catcher route as this is really where posting any available stats steers your decisions.