Yes that is true and of course strategy gives lot of gamblers the mindset that they gonna win with all surety about their games forgotten that winning aren't sure in gambling. We must understand that gambling is not a place for money making rather a place for fun while we gamble and whatever we stake at the course of gambling is what we should be able to risk at the ending time if the plans didn't go as they seems it to be.
What happened is, take the fun aspect and leave about losing part of it and take it as something common that regularly occurs while gambling.
There are many people who will find it difficult to do this, because they are already aiming to make a lot of profit from gambling.
But when they start playing, they keep losing their money until they become too addicted.
Considering losses or gains in gambling as like entertainment, will only apply when a person has determined that he or she only plays for entertainment,
but when they aim to get rich quick and get the jackpot they will keep trying and will experience stress when losing money without any profit.
Actually, regardless of your purpose in gambling, in my opinion, in gambling there is no strategy that can always be relied on, it is indeed useful but only helpful and not certain, when strategy A works well for you, it does not mean that the next time it will work again, many factors can make your predictions miss, but yes it does help especially in skill-based betting that has statistical data to analyze, so the point is even if for example you always rely on a strategy that is quite effective, it does not mean you can get rich in gambling.
Yes, especially one's luck factor will definitely be different.
Although some bets can be predicted by matching a lot of available data, it will not guarantee a win, only a few percent but still luck will still be involved.