This method is called martingale strategy.
You increase the bet amount every time you lose and return to the base amount if you win the bet.
If it this method would work, all casinos would have gone bankrupt now.
The house edge is always against you and users always lose in the long ru.
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.
It's possible to lose many more bets consecutively.
To be successful, you need an unlimited balance which is impossible.