There are a few factors to consider when sizing a bet in poker. The first is the amount of money you are playing for.
The second is the number of opponents you are facing. Finally, you should also consider your hand strength and how likely you think you are to win the pot.
When sizing a bet, it is important to consider both your stack size and the amount of money in the pot. If you are playing $2/$5 or $5/$10 tournaments, it is usually not worth risking more than half of your stack on any given hand.
In limit games, however, it can be worth risking more if you believe that you have a strong hand.
An example of how to size a bet in limit poker would be to bet $3-$6 preflop with AQ or KJ against two other players who have similar hands. If one of those players has JJ and the other has AK, for example, then the player with AK would call the $3-$6 raise and hope to win the pot with their better hand.
If either of the other players has a better hand, they would fold and let the player with AK win the pot.
