15 hands on Villian, but they seem maniacal at 93/60/50, paired with the fact that 5 hands earlier they donated their stack to me via way of calling all in on the turn (they flopped trips when I turned a full house.) I have < 5,000 hands experience lifetime in Omaha, should I have stacked off here also? Is this even a 4bet preflop possibly? Any other changes in how I should have played this?

Yatahay Network - $0.25 PL Hi (6 max) - Omaha Hi - 6 players
Hand converted by PokerTracker 4

Hero (UTG): $49.58
MP: $62.75
CO: $34.29
BTN: $25.35
SB: $43.08
BB: $36.12

SB posts SB $0.10, BB posts BB $0.25

Pre Flop: (pot: $0.35) Hero has 9 Q K K

Hero raises to $0.50, fold, fold, BTN raises to $1.85, fold, fold, Hero calls $1.35

Flop: ($4.05, 2 players) 8 T 6
Hero checks, BTN bets $3.03, fold

BTN wins $3.85

Should I go back to NLHE, or does the below hand show good decision making in giving up on turn?

Yatahay Network - $0.25 PL Hi (6 max) - Omaha Hi - 6 players
Hand converted by PokerTracker 4

MP: $84.83
Hero (CO): $25.00
BTN: $42.42
SB: $8.90
BB: $24.51
UTG: $38.61

SB posts SB $0.10, BB posts BB $0.25

Pre Flop: (pot: $0.35) Hero has A 7 K K

UTG calls $0.25, fold, Hero raises to $1.10, BTN calls $1.10, SB calls $1.00, BB calls $0.85, UTG calls $0.85

Flop: ($5.50, 5 players) 8 A 7
SB checks, BB checks, UTG checks, Hero bets $4.12, BTN calls $4.12, fold, fold, fold

Turn: ($13.74, 2 players) 5
Hero checks, BTN bets $6.87, fold

BTN wins $13.06

Looks fine as played. I wouldn't 4bet this oop but in position I might do it.

One thing to remember when facing maniacs that as you wrote "called off on the turn" is you have no FE and no reason to bloat the pots pre-flop. Once the SPR is 13 or less you don't need help to gii so get the money in when you are a big favorite not a small one. Now if they were only maniacs before the flop but solid after this doesn't work as well.

With a maniac behind me, folding rainbow kings w/o an ace is probably fine. If we do decide to play 4 betting > calling esp for someone not comfy playing oop.

2nd hand check flop. Common mistake for beginners, you're actually behind draws and getting crushed by wrap+fd.

Opponents bluffs OTT are flush draws in the second hand im guessing maybe with a pair? Would they ever just bluff here with T9 with nothing else? Calling here sucks but we have 4 outs to the nuts that means we need opp. to be bluffing around 17%ish here which is good?

2 cards are better tbh...

Agree, as played can't fold turn.

Hand 1: You can fold a lot of rainbow KK in the lojack as a default but not this one. Shrug 4 bet is an ok exploit vs maniac. But understand what goes into a balanced 4bet range and why so you can feel just how far from that this is. No ace, a pocket pair, and not just one king but two are features that normally keep this out of 4bet range. If he's just stacking off with trash, then fine but still a wild ride.

As played you have a decent kr candidate. You have a nut gutshot, top set outs, and block the flopped straight and fldr. But this benefits from what he folds, for sure, rather than looking for light calls. If you think he's going to call off lighter because he's a maniac and you recently stacked him, kf is fine.

Hand 2: good flop for your range in that you have all the top set and they don't. But you're mmw and still SPR 5 so you check this hand. At a lower SPR you might pot and sigh call it off.

As played I consider kf as button is in worst relative position (several left to wake up w something) and found a call when you have all the top set and he has practically none. He's offering a decent price for sure.

Vs a maniac we can't check/fold hand 1. Call and xr both reasonable.

not sure if pre is a call vs 3bet