There are lot of gambler who doesn't have this aspect in their pipeline that one must not always win in gambling hence, the losing rate extremely high even higher than winning ratio which every gambler must experienced while gambling. But as you mentioned, when gambling with the soul purpose of having fun and gambling with the amount that can be riskable it could be very hard for you to have that feeling of lost while gambling because already you knew is a 50/50 game.
A person who gambles for fun will still get pleasure even if he loses. This is different from gamblers who make gambling as a source of income. They will not be able to accept defeat because they want to make money from their bets. That is why someone must understand that in gambling someone will lose and win. Even most of the gambling results are losses. You can check someone's betting history and you will find the fact that someone can have a loss rate of up to 80%.