Hold'em table

On the button in three-handed play, J4s is a reasonable open. A 2.5x raise takes the initiative and can fold out worse hands before the flop.

6s7d offsuit is too weak to call a 2.5x raise from the small blind, especially out of position against the button. Folding preserves chips for better spots.

A5o offsuit is playable heads-up for a cheap price against a single raise; calling keeps me in with reasonable pot odds.

No pair, no flush draw, only a gutshot straight draw; checking as first to act with a weak hand on a flush-possible board.

Jack-high with no pair and no heart draw has little equity on this monotone flop, so I check back rather than bluff into a caller who is more likely to hold a heart.

I have only ace-high with no pair, no flush draw; no reason to bet into a checked flop with a scary flush board, so I check and see the river cheaply.

Jack-high with no draw has little value on a three-heart board with a king, and seat_3 has checked twice. Checking keeps the pot small and realizes a free river.

I have top pair aces with a decent kicker on a dry-ish river; villain checked flop and turn suggesting weakness, so a value bet should get called by worse hands or fold out busted draws.

Jack-high with no pair, flush, or straight draw completed has no showdown value against a river bet on an ace-king-heart board. Folding avoids paying 350 into a pot I almost never win.

Ace-queen suited is a premium hand and I'm on the button with position; raising for value and to build the pot against two blinds.

T6 suited is too weak to continue out of position facing a 3x raise; folding preserves chips.

T7o is too weak to defend out of position against a button 3x open; calling leaves me dominated and poorly placed postflop.

6-4 offsuit is a weak hand not worth calling from the button facing action, folding to preserve chips.

Button folded, so this is heads-up versus the big blind. 95s has enough equity to complete for 50 into a 150 pot; raising this weak suited hand is unnecessary.

Q7o is ahead of a SB limp range heads-up; a small raise builds the pot with position on the limper while keeping risk low.

95 suited is too weak to continue out of position against a 3bb raise after limping; folding avoids a dominated spot with poor playability.

AQ suited is a premium button open; a 3x raise builds the pot and applies pressure before the blinds act.

7d3d is one of the worst hands in hold'em; facing a 3x raise from the button with 250 to call, folding is clearly correct even with slight suitedness.

5-2 offsuit is a weak hand; facing a raise with a poor holding, folding is best.

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

6d Th is a weak offsuit hand out of position against the big blind; not worth completing given poor equity and post-flop disadvantage.

6-3 offsuit on the button facing a raise-limp scenario isn't worth defending; folding preserves chips for better spots.

Button folded, so this is blind versus blind and I am getting 3:1 to complete. 45o is weak and out of position, but the price is good enough to see a flop rather than give up the small blind.

K6s is ahead of a SB limp range, and building the pot with position on the limper postflop lets me pressure their weak holding.

45o is too weak to continue against a raise after limping from the small blind, so folding is the clear choice.