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Just heard someone gambling can success with strategy

maybe it will work in sportsbetting, but in gambling like dice or casino it is all depends on luck. Maybe strategy can give us win in first time, but gambling site more clever than that.
It's not about how "clever" a gambling site is, but rather about probability. The more you play the higher the chances of losing all your balance, and not the vice versa as gambling addicts think. That's why your balance should never be higher than that what you can afford to lose in one day. Skills might work for your advantage in poker or sports betting, but luck is still the most important factor imo, and any good strategy should take that into account.
Strategy is not even guaranteed to work even in sport betting, no matter how much experienced or what strategy a player brings on board without luck it will fail. From my years of experience in gambling game, with all my gathered skills and with a vast knowledge of different strategies that works for different games, I could still say that gambling is more of a game of luck. For each winning, luck has played out its great role.