I would like to have you guys speaking about different gambling techniques so that we can exchange knowledge and improve our winning chances.
I'll leave my simple technique here and I'll hope you guys can leave some more!
I often use the stake doubling technique to several games. I normally do this with dice games and if it played correctly its profitable. What you have to do is simply start with a small stake and every time you lose you double your steak until you win. Once you win, you will recover all the amount you lost. This works if you have enough money to keep doubling your bet, so you should do your math and check with how much you should start. It is not infallible but it works.
The technique you mention is called the Martingale, I'm surprised you don't know it by that name or have mentioned it.
To be able to use it, you need to have a very considerable available balance to be able to double your positions whenever you are losing.
But, you said it yourself, it is not infallible and the Martingale strategy has proven to completely lose its effect when it lasts for a long time, so you need to know when to face losses and leave this "strategy" by finalizing your operation and returning with a small bet.
In times of loss, there is an imminent risk of being liquidated, so doubling the bet is not indicated in the long term, but in very specific situations where you think you are having a moment of luck and also stipulating maximum bet limits , assuming a loss if it exceeds this value.