If you use your money, spend it for anything with chance of getting rich, you are taking risk. Either investment, trading, gambling or anything else, it's risk taking decision. Risk is unpredictable and uncontrollable so you must have risk management well even before taking risk. It starts with how you manage your finance, and assign a part of it for risk taking actions like investment, trading or gambling. This risk-taking fund part must be small enough in your whole financial fund in order to save your main financial parts even if you lose the small fund for risky decisions.
After doing this first step well, a gambler can move next to learn how to gamble like choosing games, bet strategy and more.
I could have misunderstood your point but when I read down the lane, I was able to get the point you were trying to make, as long as you said that ones risk funds should be much then I think I will agree with you on that, some persons don't know this part you mentioned, they want to risk everything,they don't think twice when it comes to risk, they aren't ready to differentiate real investment from either gambling or trading, I won't argue that we can't win in gambling or even make profit in trade but am just saying that it has to be minimize, we can win big in all of this, with your advise a gambler can get things right,
Of course a gambler should be able to know their limits and how much they should allocate while gambling and shouldn't expect something Very big while gambling, and yes any amount used to gamble shouldn't be expected to come back in 100 folds rather whenever you gamble and have winning then it increases your chances.
Gambling is simple provided your gambling within your means and not above your limits, when you gamble out of proportion it gives you that stressing moment to be wanting to recover what you had already lost while gambling.