Not entirely true, because everyone has a different level of emotion when they are happy and very happy. OP said that being too happy will also affect gambling because we won't be too focused while in the game. excess is not good and will have a negative impact. when you bet in a happy mood maybe it's only to the extent of your own satisfaction and you don't have any burdens.
The main reason why people want to gamble is that they have extra money to make a bet, and the extra money will not be a burden when it is lost and you don't make a profit. To gamble safely and comfortably, you have to think about many things so you don't get caught in an unprofitable situation and don't lose a lot of money, everything really has to be taken into account.
yes indeed excessive happiness will greatly affect a person's emotions out of control, but on the contrary, for myself gambling when the mood is happy is like luck. because every time I want to place a bet I have no more doubts right away.
for example when I'm in a happy mood, I will bet calmly and without hesitation and when betting with rather large bets I also don't hesitate when lucky opportunities come and hit the jackpot.
but when my situation is not happy, when I want to bet there are always doubts and in the end I only bet a small amount and only get a small profit. even though if you don't hesitate and risk a large amount you will get a big profit.
but back to every gambler because I and they have differences. so they have their own choice to determine when is the best time to gamble