That's right because when we are placing bets, in a sense we are throwing money in hope of getting more of it rather than losing it, and if someone does that without proper timing then the result will be the loss of that money. Yeah, the ones who follow an approach where the surely is very less then the result of that kind of approach is often the loss of money.
Yes, it's true, that there must be sacrifices made first to be able to get a profitable result that exceeds the capital that has been spent so that someone will get a win. But for a time I thought that in gambling there are no rules in terms of time, I mean that a person will not know when they have to play, and there are no rules for an exact time in it. Unless there is a feeling that they feel that will encourage them to make a bet, then at those times most of them will do it in the hope that this is the right time to win a win.A gambler should understand that gambling requires some kind of luck factor, mostly the games that these casinos offer, and if someone delves into those games with a low luck then that person could face huge losses in gambling. A good and a proper gambler would work with a strategy and should also have luck to get winning bets.
It is true to say that gambling is only based on luck. You say that someone can learn the game, I don't see a concept they can learn there. Maybe what you mean is that someone can increase their chances of luck by looking at the RTP system that exists in each game, if the RTP percentage in the game is high then their chances of getting a win will be even greater. But in my opinion, we cannot fully rely on the RTP machine to get lucky, because in my experience there are also many RTP systems that actually have absolutely no effect even though the percentage is high. It turns out that indeed in gambling everything will return to the luck of each person. 
