In gambling just like in vegascasino.io , most of the games there is quite good because if you know how to hold and use your earnings, you will gonna have some savings. Learn how to enjoy the game and not to hooke up negatively in the game.
So, you are a millionaire now because of playing in the gambling house, you just mentioned ? Quite good in what sense ? In look and feel ? I wonder on what level of saving you are talking about. As far as I have experienced no house will let you leave out with some money left with you as your your brain will fade away. You may have some money left if you are smart enough to quit right after a winning. But, no gamblers are ready to stop trying their luck until bankroll allows.
Only 1 people can win over 100 people that gamble at same time , that's why gambling is risky things.
But in most cases that only one gambler is also the house not a common gambler. Anyone may win in gambling but that cannot be a money but some entertainment.
Being a frequent gambler, I just want to answer OP :
Any gambler can win entertaining moments in gambling always.
Make sure why you gamble and why gambling is existing, when there will be a controversy on this then you cannot win anyway.