Hold'em table

On the button 3-handed, J8o is a standard wide open; raising to 3x applies pressure on the blinds and lets me play postflop in position with fold equity.

Q2o is an unplayable hand out of position facing a button open, making this a clear fold.

AK offsuit is a premium hand and the button's 3bb open is a wide range, so a 3-bet to 9bb builds the pot and takes the initiative heads-up.

J8o is far too weak to call a 600-chip 3-bet from the big blind; I'd be dominated by most 3-betting ranges and would need roughly 32% equity with a marginal holding. Folding preserves chips for a better spot.

Opening with a premium hand (AKo) from the button to 2.5x BB.

75o is too weak to call a button raise out of position for 2bb more. Folding preserves the stack for better spots.

QJo has strong equity against a wide 3-handed button opening range, and calling 150 into a 400 pot needs only ~27% equity. Calling keeps the pot manageable out of position while realizing my equity postflop.

Queen-high with no made hand or direct draw on a K-high flop against the preflop raiser; checking keeps the pot small and lets me reassess cheaply rather than bluffing into the aggressor's range.

I hold top pair top kicker on a draw-heavy flop, so I make a half-pot continuation bet for value and protection.

I hold only jack-high (QJ on K86) with just backdoor draws, facing a flop barrel from the preflop raiser whose range heavily contains kings and overpairs. Calling needs ~24% equity I don't have, and bluff-raising with no draw is unprofitable, so folding is clearly best.

95s is playable from the button in three-handed play, so I open to 2.5bb to take the blinds or see a flop with position and a suited hand.

82s is one of the weakest hands in hold'em, and I'm facing a 2.5x raise from the button with the big blind still to act. Calling 200 more with no fold equity and a dominated, poorly-playable hand is a clear losing play, so I fold.

83s is too weak to defend out of position against a 2.5bb open from the button, so folding is clearly the highest EV play.

54 offsuit is too weak to open even from the button three-handed; it flops poorly and rarely realizes equity against two blind defenders. Folding and preserving the 100bb stack is the clean play.

43 offsuit is too weak to play out of position against the big blind, making an easy fold.

K7o is slightly too weak to open profitably from the button 3-handed, making fold the standard play.

69o is too weak to complete or raise out of position against the big blind after the button folds, so I give up the small blind.

Ace-eight offsuit is a standard button open in three-handed play, so I raise to 2.5 big blinds to take the initiative and fold out weaker hands.

K3s is a weak hand facing a 2.5x raise out of position with two players behind; folding is clearly best.

K7o is slightly too weak to defend out of position against a 2.5x button open.