I use martingale strategy it is easy but high risk.. need big bankroll 
I don't know what is the best strategy..
I don't know what is the best strategy..
There is no easy or shortcut to earn money. You should work hard for it. Martingale method works may be a short time, but if you play for a longer period, then it will work for gambling house and not for gamblers. So there is no working method available in gambling to earn money