Hold'em table

23o is the worst starting hand and has poor playability even on the button; folding avoids investing chips out of position with a dominated hand.

KTo is a strong heads-up blind-versus-blind holding and benefits from applying pressure preflop.

Jack-eight offsuit is a weak hand against seat_2's preflop raise. Folding avoids a marginal situation where I'm likely behind, preserving chips for stronger opportunities.

KTs is a strong button opening hand in three-handed play. I raise to apply pressure and build the pot with a hand that plays well postflop.

9c4c is a weak hand with poor equity against a 2.5x raise from the button. With no strong draws or position advantage, folding preserves chips for better opportunities.

5-7 offsuit is too weak to defend out of position against a button raise, so folding preserves chips.

A4o is a weak hand in early position. Folding preserves chips for stronger starting hands and avoids marginal situations where I'm likely dominated.

K2o is weak but closing the action for only 50 more into a 150 pot gives good odds, and raising would risk too much with a marginal hand out of position.

With J5 offsuit in a heads-up limped blind pot, checking realizes equity without inflating the pot with a weak hand.

Heads-up against a big blind who checked preflop, the ace-high flop is unlikely to have connected with their wide range, so a small semi-bluff with backdoor flush equity should fold them out often enough to profit.

We have a pair plus a jack-high heart flush draw on a board where the small stab can be very wide. Calling in position keeps weaker hands and bluffs in while retaining strong turn equity.

I have a jack-high flush on the four-heart board and should value-bet against aces, smaller flushes, and stubborn pairs after the opponent checks.

A8o on the button in a 3-handed game is a strong enough hand to raise for initiative and to put pressure on the blinds. Raising to 300 (3x) is a standard size that can take down the pot preflop or isolate weaker hands.

7c3c is far too weak to defend from the small blind against a button raise, especially with the big blind still to act.

9-5 offsuit is a weak hand facing a raise from the button. With only 200 chips to call and facing a 3x raise, folding preserves chips when equity is marginal against an aggressive opener.

T5 offsuit is too weak to profitably open in this spot, so I fold and preserve the stack.

9-8 offsuit is a weak hand in 3-handed play facing a big blind. Folding the small blind is standard with this low-value hand when there's no favorable situation, as I've already invested the small blind and the risk-reward doesn't justify calling or raising.

Button folded, so I'll raise from the small blind with a playable suited connector to take initiative and put pressure on the big blind.

8c7c has good equity and playability heads-up against a small-blind 3x open, and the big blind is receiving favorable pot odds. Calling preserves flexibility postflop.

My 4h5h has no pair or strong draw on Js Qh 9c, so I check out of position and avoid bloating the pot.

I semi-bluff the checked flop with a gutshot to a straight and some fold equity against unpaired overcards or small pairs.

I have 4-high with no pair or draw on a coordinated board, and facing a bet with only backdoor possibilities, folding is clearly best.