If I guess correctly, I think the instance that OP is trying to set here is when you have stake on some accumulator and at some point, you just lost hope that the game was not going to be successful because of how it is going already and after you have given up, you checked later and realized that you have actually won the bet. Although what you said is true, there's no gambler that wager some money without expecting to win, but what if you wager on the first go without expecting to win a jackpot but on your first try, you won millions of dollars from the jackpot, that will be surprising.
The gambler who play the game with more emotion,Surely loss their funds.Because they mostly play the safe game,the risk in the gambling sometimes multiples your money.But playing safe game will make you to loss all your money.Because you never any risk in the game,the gambler will try to save their money again and again.The gambling with strategy may help you to make money in the gambling site.