Playing for fun is the best way to overcome gambling disappointment. And in gambling both the slot and crash games are lucky and chance oriented and anyone that comes the gambler takes. But when playing with fun, and you loss, it will still painful but it will not painful as the gambling to win profit or gain.
It is good to use small amount to gamble so it will not be painful when losing. But one thing is that when you gamble and win big you will be motivated to gamble higher and that will lead to another dimension of gambling.