Hold'em table

I have a weak 2c-4s offsuit with no playability. The pot is 150 and I only need to call 100, but I'd rather preserve my stack than play a dominated hand out of position.

Q5 offsuit is weak; button folded already, but facing BB with a marginal hand, folding preserves chips heads-up out of position vs BB.

2-6 offsuit is a weak hand from the button facing a raise-worthy pot; folding is standard here.

58o is too weak to complete out of position against the big blind after the button folds, so I give up the small blind.

Pocket queens are a premium hand on the button, so I raise to 3x the big blind to build the pot and take control preflop.

With Ace-King on the button facing a min-raise, calling keeps my stack efficient and preserves the option to bluff or value-bet on later streets.

6-2 offsuit is a weak hand facing a raise and a call; folding is correct here.

Top pair with Ace kicker on a dry flop; checking controls pot size and avoids building a big pot with a single opponent who raised preflop.

I have an overpair to most of the board and the preflop caller checked a dry king-high flop, so a small continuation bet gets value from worse pairs and denies free cards.

I have top pair with a decent kicker on a dry flop, so calling keeps the pot controlled while I can evaluate further streets.

Board is paired with a King and backdoor flush draws; my Kd gives me top pair but vulnerable. Checking keeps the pot controlled and avoids building a big pot with a marginal hand against a player who raised twice.

I have queens and kings for two pair on a paired board, and the opponent has checked twice after calling. A turn bet gets value from worse pairs and draws while keeping the pot controlled if they are trapping a king.

I have top pair with the Ace kicker on a paired board, which is a strong hand. Calling avoids bloating the pot with a bluff-catcher against a button raise while keeping the door open for a potential river improvement.

I have top pair with Ace kicker on a K-J board, but the opponent has shown consistent aggression and I'm out of position. Checking allows me to control pot size and potentially induce a bluff or see a cheap showdown with my decent but vulnerable hand.

I have kings and queens on a paired board against a passive caller who checked for showdown. A one-third-pot bet can get called by worse pairs and ace-high while keeping the loss manageable if they have a king.

I have top pair with the Ace kicker on a board with two Kings, and the opponent's small river raise looks like a thin value bet or a bluff. Calling is the best play to realize my equity without overcommitting.

7h4h is a weak hand with no pair and poor connectivity, and calling 100 to play a speculative hand out of position against two opponents is not profitable. Folding preserves my stack for better opportunities.

5-2 offsuit is a weak hand not worth defending even for a small additional call against the big blind.

K2o is a weak hand out of position postflop against two live players; not worth continuing for 100 chips.

9-5 offsuit is too weak to continue out of position against the big blind for even a small completion.

Q3o is too weak and disconnected to open from the button even three-handed; folding avoids dominated spots and poor postflop playability.

I have 2h8s, a weak offsuit hand, and the big blind has not folded. With no read on the opponent and a bad price to call, folding minimizes losses.