Gambling Strategy Help: Win 90% of 4 Round Games

[xNICK1]

Looking for help to try an make a profitable strategy off the example.
payout= 1:1
Using 4 rounds the strategy wins 1 of 4 rounds 90% of the time, the other 10% it loses all 4 rounds
Rules: if any round is won that game is over, else keep betting till all 4 rounds over
The question is how to I change the betting method to turn positive results
Key= g=game, r=round, b=betting amount, pl=current running Profit/lose
Ex1: 10 games of 4 rounds
g1: r1: b=1, lost, pl=-1 | r2: b=2, lost, pl=-3 | r3: b=4, won, pl=1
g2: r1: b=1, lost, pl=0 | r2: b=2, won, pl=2
g3: r1: b=1, lost, pl=1 | r2: b=2, lost, pl=-1 | r3: b=4, lost, pl=-5 | r4: b=8, won, pl=3
g4: r1: b=1, lost, pl=2 | r2: b=2, lost, pl=0 | r3: b=4, won, pl=4
g5: r1: b=1, won, pl=5
g6: r1: b=1, won, pl=6
g7: r1: b=1, won, pl=7
g8: r1: b=1, won, pl=8
g9: r1: b=1, won, pl=9
g10: r1: b=1, lost, pl=8 | r2: b=2, lost, pl=6 | r3: b=4, lost, pl=2 | r4: b=8, lost, pl=-6
Ex1: results to a -6 profit/lose after winning 9 trades in a row before losing 1

 

[Valkarie]

.One way to try and make a profitable strategy off this example would be to use a form of money management. This could involve using different bet sizes depending on your current Profit/Loss, as well as adjusting the bet size after you win or lose a round. For example, if you are on a winning streak and have a positive Profit/Loss, you may want to increase your bet size to maximize your profits. On the other hand, if you are on a losing streak and have a negative Profit/Loss, you may want to decrease your bet size in order to limit your losses. Additionally, you could also use a stop loss system, where you will stop betting after a certain number of losses or after a certain amount of Profit/Loss is reached.