Hold'em table

Ace-high on the button in a 3-handed game plays well against only two blinds; a small raise builds pressure and can win the pot preflop or set up a favorable postflop spot.

J3o is too weak to continue out of position against a button open, so folding is the highest-EV line.

98s is a playable suited connector getting good pot odds against a single raiser; calling keeps the pot manageable heads-up post-flop.

I flopped the straight (5-6-7-8-9) plus have a flush draw backup, giving me a very strong hand; betting for value and to charge draws.

I only have ace-high with no pair, no draw, and essentially no equity on a very connected 5c-7c-6h board. Calling 450 into 1100 against a donk lead needs ~29% equity, which ace-high doesn't have, so folding is clearly best.

58o is too weak to open from the button in this three-handed pot, so folding avoids putting chips in with a dominated offsuit hand.

Weak offsuit hand (T5o) with only BB left to act; not worth completing from SB.

KJ offsuit is a decent button hand; raising to 250 to build the pot and take initiative against blinds.

96s is too weak to call a 2.5x button raise out of position as the small blind; folding avoids playing a dominated suited connector with no fold equity edge.

54o is too weak to continue out of position against a button open; folding saves chips.

Queen-six offsuit is too weak to play even from the button in a 3-handed game; folding preserves chips for better spots.

K6o is too weak to complete or raise out of position against the big blind, so folding the extra 50 is the higher-EV line.

AQs is a strong suited broadway and I am first to act on the button, so a standard 3x open builds the pot and denies cheap flops.

9-10 offsuit facing a 3bb raise from the button with a big blind still to act behind is a marginal, easily dominated hand; folding preserves chips.

A4 offsuit is far too weak to call a 3x button raise out of position; folding preserves chips for better spots.

Q6 offsuit on the button facing a raise-limp scenario isn't strong enough to invest; folding to preserve chips.

Ace-jack offsuit is strong heads-up against only the BB; raising for value and fold equity is standard from the SB.

46o is too weak to continue against a 3x raise; it has poor equity and playability, so folding is the highest-EV option.