I agree with you, "gambling for fun" is just a word, in reality every gambler gambles for money. And because of gambling for this money, gamblers become addicted, and lose financial stability. In fact, due to not understanding the reality, the main purpose of people gambling is to make money. But they never get success, they only get losses every time, but even after that they cannot get out of this temptation. Gambling addiction enters the gambler in such a way that they can never get out of gambling, thus they always lose only their stability, they lose their stability in all aspects. And their beautiful future is ruined.
Almost everything people do in adult life is for money, but this does not mean that everything they do can bring income. In gambling, each player first looks for earnings, but then when they realize that it is much more difficult than they initially thought, everything turns into a game for fun. If you play for several years and are at a loss, will you be able to say that you play for earnings, or will you say that gambling for you is a game for fun?