Roulette players are antique. By this I do not mean that they are all older, but that they play a game with a lot of tradition. A long tradition that goes back hundreds, if not thousands, of years when shields were spun around and villages and towns lived or died as a result.
Betting methods and sophisticated betting systems of all kinds have been used to try to beat the game and guess what (do you know how to guess)? None of these betting methods and none of these betting systems have paid off. The house advantage was (is) impregnable and cannot be beaten with a betting method or a betting system of any kind.