Hold'em table

A5s on the button three-handed is a standard open-raise for value and fold equity; a 3x raise builds the pot while keeping the hand playable postflop.

QJo is strong enough to continue against a single button open, and calling 200 into a 450 pot keeps the hand playable without bloating it out of position.

I have top pair with a queen kicker on a dry flop and act first out of position. A half-pot bet gets value from worse jacks and floats while denying free cards.

I flopped bottom pair with the ace kicker, which beats most of seat_3's donk-betting range that isn't a jack; calling 300 into a 950 pot keeps the pot small while retaining showdown value and the option to fold to further aggression.

I have top pair with a queen kicker on a relatively dry turn and was the flop aggressor, so I continue for value and protection against worse pairs and draws. An 800 bet is about two-thirds of the pot and keeps worse jacks and medium pairs in.

My pair of fives with an ace kicker is likely behind seat_3's growing aggression (BB call then flop and turn leads), and I'd only beat bluffs. Folding for 800 into a small pot preserves my stack for better spots.

J5 offsuit is a weak hand not worth playing from the button facing a raise-free pot; folding preserves chips.

Button folded, so this is heads-up versus the big blind. J8o is too weak to limp out of position, but a small raise takes the initiative and can win the pot immediately.

King-two offsuit is dominated by the raiser's 3x opening range and has poor playability postflop. Calling 200 into a 400 pot with a weak dominated hand is -EV, so folding is correct.

73o is too weak to open from the button into two live blinds; folding preserves chips for better spots.

Heads-up with an ace-high hand, I have good equity against the BB's range and raising builds fold equity rather than limping into a disadvantaged spot.

K8 offsuit facing a raise heads-up out of position is not worth defending; fold to avoid a marginal spot.

J9o on the button 3-handed has decent playability and position; a standard 3x open applies pressure and can win the blinds or build a pot in position.

4-2 offsuit is too weak to continue against a button open; folding saves chips.

Button raise with Ace-high to build pot and apply pressure preflop.

2-5 offsuit is too weak to continue against a button raise; folding saves chips for better spots.

J4 offsuit is far too weak to defend against a 2.5x button raise; I'm frequently dominated and the hand flops poorly. Folding and saving 150 chips is clearly best.

K8o is playable from the button in three-handed poker, so I open to 2.5bb for initiative rather than limp or fold.

Queen-two suited is far too weak to defend from the small blind against a 2.5x button raise, with the big blind still behind me. Folding avoids playing a dominated, hard-to-make hand out of position.

Ace-high with a weak kicker isn't strong enough to 3-bet, but getting decent odds to defend the big blind against a single raise.

I only have bottom pair with an ace kicker and no draw worth building the pot; checking to control pot size and see what the raiser does.

K8 has no pair or real draw on J94, so checking back avoids bloating a pot I am unlikely to win.

Bottom pair with a backdoor flush draw isn't strong enough to bet for value; I'll take a free card and control the pot.

King-high with no pair or draw has little fold equity against a BB calling range, and checking is free after the opponent checked the turn.

I hold three 4s with an ace kicker, a strong river hand; betting for value against a checked-through river where the opponent may still have a pair worth calling with.

I have only king-high on a paired board and seat_2's river bet is too expensive to call with no made hand or draw. Folding avoids paying off any pair or better.