Mystery Bounty Accumulation Spots

$100 Mystery Bounty Accumulator tournament (Multiple starting days) and all your stacks combine for day 2. So some people play a lot of these and play pretty wild.

Hand 1
We have villain 1 marked as loose/bad
Hero has 31BB
Villain 1 has 28BB in sb
Villain 2 has 58BB in bb
Preflop: Hero has Ac Jc OTB
folds to hero and we raise 2BB, SB calls, BB calls,

Flop: Ks 8c 4s
X, x, Hero checks,
Turn: Ad
x, x, Hero bets 4.5BB, Villain 1 in sb calls, BB folds,

River: Ts
Villain sb donks for 10BB, hero folds

I kinda keep thinking that the villain knows it's pretty unlikely that I have a flush after checking back that flop and I feel that I have to call that river some of the time?

Hand 2:
Hero starts with 22BB, We are now 6 handed
I have the villain BB marked as a bit of blaster/aggro type of player (high % of 3 betting)
Villain in question has 36BB
Villain 2 has 9BB ( seems loose/bad)

Preflop: Hero has Ad Th UTG
We raise to 2BB, 2 folds, Btn calls, sb folds, BB calls

Flop: As Jh 7d
BB checks, Hero bets 2.4BB, BTN folds, BB calls

Turn: 8d (pot is 12BB)
Hero bets 6BB, Villain shoves, Hero calls (10BB more)

I think on the turn I am going we are pretty much going with our hand? Is there a world where we are bet folding here? If we bet the turn with intention of folding or to consider folding, we bet smaller? Not really sure about this spot.