Hold'em table

K2o is too weak and dominated to open from the button for a full raise, so folding preserves chips.

5h3c offsuit is far too weak even from the small blind heads-up; folding loses only 50 chips.

J8s is well ahead of an average holding in a blind vs blind situation; raising to 3bb applies pressure and takes initiative.

Pocket sevens is ahead of a wide small-blind open and I have position heads-up, so a value 3-bet to 900 builds the pot and folds out overcards.

Folding J8s out of position facing a 3-bet from the big blind is standard and protects our stack.

J4s is too weak to reliably open-raise from the button even 3-handed. Folding is the standard disciplined play.

84 offsuit is too weak to call or raise out of position against the big blind after the button folds. Folding saves the extra half-blind.

T9o is a standard button open in three-handed play, and a 3x raise takes the initiative with position rather than flatting the big blind.

AK offsuit is a premium hand, especially 3-handed; I 3-bet from the SB for value and to isolate the button opener rather than flatting out of position with the BB still behind.

Folding 8d 5s facing an open and a 3-bet preflop.

T9o is too weak to continue against a small-blind 3-bet to 900; calling 600 more with no pair and poor equity is a clear fold.

Q7o on the button is a standard positional open; raising to 3x applies pressure on the blinds.

J5s is too weak to defend out of position against a 3x button open with the big blind still left to act.

AQs is well ahead of a button open and plays best as a 3-bet. Raising to 1000 builds the pot and denies cheap equity.

Q7o is too weak to continue against a 3-bet to 10bb; folding is clearly best.

Q6o is too weak to open profitably even from the button in 3-handed play.

Button folded, so this is blind versus blind. J5s is too weak to flat out of position, but a small raise takes the initiative and can win the pot immediately or let me continue on favorable flops.

Q3o is dominated against a 2.5x open; calling out of position with a weak queen just leaks chips. Fold.