My question is: there is something to learn about roulette gambling, or just luck in this game.
Apart from the experience you learn when you lose in playing roullete there is no anything else to learn there. For me they are just the same with dice games that rely on your luck to win the game. I've tried countless strategies playing those games and nothing worked best. You just win at first then losing streak will hit you if you lose control of your emotion.
There is in fact a way to win at a physical roulette, but it is incredibly boring and it is very suspicious and casinos will know that you are up to something and most likely you will not get great profits with it anymore, but at least in the past there were some people that did it, the method is that you watch and write down the results of tens of thousands of spins of a single roulette and then you calculate the actual odds of the numbers showing up, now if a number appears more than it should and when you calculate your EV by betting on that number and the EV is positive then you could make money on the roulette by just betting that number over and over again, but as I said this is very difficult to do as casinos know the strategy already.