Hold'em table

Q6 offsuit is too weak to open from the button for a full raise, and calling the big blind out of position postflop is unprofitable. Folding preserves chips for better spots.

Heads-up against only the big blind, J8s has enough equity and flop playability to justify completing for 50 rather than folding; raising would overcommit a weak hand.

I have 85o in the big blind facing a limp from the small blind; checking to see a free flop is standard.

I flopped top pair with a jack kicker on A-A-2, which beats most of the big blind's checking range, so a small bet earns value from worse aces and denies cheap cards to diamond flush draws.

I have eight-high with no significant draw on a paired Ace board facing a flop bet, making this an easy fold.

Seven-three offsuit is far too weak: calling 100 into 150 needs ~40% equity but this hand has ~20% vs two players, and raising trash into two blinds is -EV without reads. Folding costs nothing.

86 offsuit is too weak to complete or raise profitably from the small blind out of position.

A8o is a standard opening hand on the button in 3-handed play.

42 suited is too weak to continue out of position against a button raise; folding saves chips.

J4o is far too weak to defend out of position against a button raise; even with 2.67:1 pot odds, poor equity realization makes folding the best EV play.

J9s is a standard button open in three-handed play; a 2.5bb raise builds the pot with a suited connector that plays well in position.

43o is far too weak to call 2.5x against a raise with two players behind. Folding minimizes loss.

In 3-max, A7o has sufficient equity against a button open to defend getting almost 2.7 to 1 odds.

I check out of position on this flop with Ace-high and a gutshot straight draw.

I have top pair with a decent kicker on a dry flop and the big blind checked. A half-pot bet gets value from worse pairs and draws while denying free cards.

Holding Ace-high with no made hand or direct straight/flush draw on a coordinated 9-8-3 board, folding to a half-pot continuation bet is standard.

J9o on the button three-handed is a marginal but playable hand; limping behind keeps the pot cheap while retaining decent flop playability without risking a big raise with a dominated holding.

With 97s in the small blind getting 5:1 pot odds against a button limp, completing is plus EV with good postflop playability.

AK suited is a premium hand against two limpers, so I raise for value and to take the initiative rather than check.

J9o is far too weak to call a 5bb raise from the big blind after limping; I'm dominated too often and folding costs nothing more.

Facing a 5x raise from the big blind out of position with 97s, calling 400 chips offers insufficient implied odds.

J2s is too weak to profitably open from the button even 3-handed, making fold the standard play.

32 offsuit is too weak to continue even heads-up; calling or raising would waste chips with almost no equity or playability.