When you see the result of the game you just played before you, you will definitely be tempted to play again to either win more money or recover the one you've lost. A gambler who chooses to go for luck base games like slots should learn how to control his emotions. Failure to put his emotions in check, he will keep enriching the casinos at his own detriment
Controlling emotions not easy as it may seems , aslong one has already started gambling the chances of he or she getting overwhelmed by their emotions is high , because no one enjoys losing money , yeah when one emotions is off he or she will only endup increasing or multiplying that losses in the end that's why no matter how hard it may seems one should always do so in controlling their emotions, by having a good self-control.
When betting, anyone will get emotional if what they bet loses, and I agree with you, it is not an easy thing to control emotions and often we see those who lose in betting will be emotional and if they can't control it, of course, they will suffer even greater losses.
If someone bets on a luck-based game when they are emotional they will certainly continue their bets as long as they still have funds that they can use and in terms of skill games of course they will no longer make the right decisions and this will of course make them lose again in betting, to be able to control emotions I think we must be able to accept everything that we experience while betting and not to let The game dominates us so that we continue to play until we don't have any money left.