Do only 50% bet 20$ every time if it fails do 60$ it fails do 150$ if it fails do 350$ if it fails do 900$ if it fails do 2300$
There is no way you will fail 7 times and if you do just increase the bet and you will get it back eventually even if you wait 12 times.
what you think on my method?
That was a horrible analysis. Thinking there is no way to fail 7 times is just your illusion. Can your bankroll even afford to hold until 12 losing streaks? Your analysis is like doing a martingale method which in fact it's not a method but rather a betting type. You just add additional risks to your bankroll that way.
After $2,300, do you even have the guts to bet big next? That's the worst way you tell us.
If you really believed in that method, then show us your roll history with the betting amount you mentioned.
Agree, easy to say but very difficult to do. If a gambler wants to bet the mentioned method then he needs a different kind of adventure. That courage is usually lost after repeated defeats. Moreover, if the financial ability is not sufficient, it is not possible to follow that strategy. The OP refers to compounding bet amount which is not an easy task to continue for all.