Poker is much more than a simple card game, It is a battle of wits between several players at the same time, and a study in Human behaviour or Psychology of how we think and behave in certain situations.
In Chess you have one opponent to beat, and if you can Identify if that opponent is very protective over his strongest pieces on the board, it becomes very easy to manipulate that player into making moves that he wouldn't normally make, in order to protect those pieces.
In Poker you have only your Chips to protect, but many more opponents wanting them all. So it is very important on how you act when you are feeling threatened, Do you protect the Stack and Fold when someone raises? Or do you fight back and Re-raise attacking the aggressor?
Only the River card will determine whether you played correctly or straight into your enemies
hands.
Good Luck!