I think gambling has a 60/40 chance. The casino always has an edge over the player. This can be likened to a situation where in a racing competition, one of the runners is given some steps ahead of other runners. In this analogy, the runner ahead is the casino whereas the other runners are the gamblers. In this situation, it will not be easy for gamblers to win and so you require luck and skill to win which is always not easy.
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Gambling is 100% based on luck, and for casino games there are no skilled required. This is what most people get confused in an loss their money, as a gambler if you gamble with the intention that it is based on luck l, and also you gamble moderately without staking money you can't afford to loose at the moment, then I think you're doing the right thing.