In the case of betting, strategy cannot always bring positive results to the gambler, he must change the strategy. If you do not win with a strategy, you should not think that the strategy is not good. Sometimes a strategy may work and sometimes it may not be effective. That is why you have to rely on luck to some extent in the case of gambling. In the case of casino gambling, if I use a strategy, I try to use it several times and if I do not get any positive response there, I try to change that strategy. But generally I try to gamble based on my limitations so that if I lose, it cannot have a negative impact on my gambling.
Gambling inevitably involves luck in winning. Therefore, it's perfectly normal for a strategy to fail to produce a win. Besides luck, gambling is also a matter of probability, and behind the game, there's a bookie or someone who orchestrates everything to profit from the large number of gamblers. Therefore, no matter how good a strategy, it can't guarantee a win, as the house always wins.
Furthermore, not all types of gambling can be implemented strategically. Some games rely purely on luck, so no strategy is applicable. What we should do is not expect too much from gambling, remembering that this is a business with the goal of generating profits, so winning isn't easy.