My best gambling strategy is by only playing roulette at the casino. Then I only play on colors I know that that is what beginners do but it has shown me to be the most effective.
So I suggest that you try it out, you will have to play many rounds but in the end it is worth it.
Honestly you can not make any profit in roulette its hard to win in that game.. and its always depends also in your luck.
And i think there's no best strategy in that game.. i already tried many thing in google but don't work..