Quitting when you lose can be more difficult than stopping when you win.
Defeat can have the effect of increasing emotion and a sense of wanting to avenge defeat so that gamblers forget about limits and control over themselves.
Even though at the beginning of the game session gamblers can be calm and play well, when defeat occurs, everything can turn 90% into gamblers who are panicked and ambitious.

It's better to enter the casino with a small amount of money and leave when you've run out or won so you don't lose a large amount of money when you're not doing well.