their are a lot of tricks and strategies to win a bet in gambling, one of it is the bluff it is an attempt to deceive someone into believing that one can or will do something. with that trick, your opponent will believe the you have the winning cards.
It may not work always with everyone so in gambling all these tricks work only for a short term.
Tricks cannot be used in any type of gambling, there are type of gambling that a trick is useful like a game card because some players of it is using tricks to win and if you are not wise and observant enough then there is a great chance that you will loss your game.