It's way more simple than you can imagine : just run a roulette business and you will be sitting on a nice 2.70% house edge, talking about European roulette ( single zero one) , that is quite a bit of HE considering most of dice sites have around 1% and the most of players keep on losing to dice as well.
Joking a bit but not even that much.
Seriously speaking to win big on roulette imo you just have to make one single allin bet and pray for luck ...like
this guy did.
I saw this guy long ago... crazy decision, but he had luck and won! So much about that! We should check the casino where he placed bet, it's definitely provably fair one!
Roulette is a crazy game! I love to play roulette occasionally and I have some of my own strategies I like to chase... I won and lost a lot in trying, it's all I can say! For roulette, you need to risk a lot if you wish to win a lot, and hitting zeros and numbers ain't easy at all!
Other than that, chasing red/black, pair/even at x2, or x3 for some part of the board... is not worth even trying! Martingale here is not working, soon a losing streak will come, in my case every time sooner than I thought!