I don't know what is the best strategy..
Martingale is proven that it does not work in the long run. People just believe what they can gain in the short run until they suffer a huge losses than they realise the truth. Casino wont be around if there is something that can win against the house edge.
For me martingale is not even good in the first place. Whether it will be long term or short term, it is not been effective to me. And that's way starting by finding that out, I started to use no strategy at all. I just do gamble the way I was that I afford to lose and betting small amount for each bets that I made. And sometimes I'm just having that feeling where to bet or not.