so villain proved to be funny 3betting me 4-5 times IP so i picked 99s and decided to play him 3betting him IP (he`s also sorta loose). He 4bets which makes me suspicious so i just flat this then flop and turn im pretty sure i have him crushed given his bet sizing and prior observation which is why i put him on Axs or AKo so i decide to fold turn...

PokerStars No-Limit Hold'em, $0.02 BB (8 handed) - Converted at http://www.handhistoryconverter.com/

MP1 ($3.85)
MP2 ($2.19)
Hero (CO) ($4.99)
Button ($2.10)
SB ($2.68)
BB ($2.43)
UTG ($2)
UTG+1 ($2.51)

Preflop: Hero is CO with 9, 9
UTG raises to $0.06, 3 folds, Hero raises to $0.20, 3 folds, UTG raises to $0.46, Hero calls $0.26

Flop: ($0.95) 6, 4, J (2 players)
UTG bets $0.30, Hero calls $0.30

Turn: ($1.55) 2 (2 players)
UTG bets $0.50, Hero calls $0.50

River: ($2.55) A (2 players)
UTG bets $0.74 (All-In), Hero folds

Total pot: $2.55 | Rake: $0.09

Results:[spoiler]
UTG didn't show[/spoiler]

Idea? Did i play this right? Should have i just folded on 4bet?

Don't 3-bet. Don't call the 4-bet. Flop is fine. Turn is lol. River is good!!!

Only reason i 3-bet was because this guy is pretty loose as i mentioned. Ofc thats not my standard play. Thx for input tho

All you said was he 3-bet you when he was IP a few times. There's no mention that you thought he was opening too wide. Without a solid read, I wouldn't 3-bet 99 against UTG in a fr game.

Why would this make you suspicious? He's UTG in a full ring game and 4-bet and we apparently have very little in the way of reads on him. It's a very easy fold.