While in reality you will also lose more. Application of martingale in sport betting is IMO even worse than in Dice or Roulette, don't do that.
This is day 3 i run this system from bankroll 300mBTC and now my balance is 320mBTC. my target in 1 week is 30% from 300mBTC. so what wrong in my step?
Using martingale will always be a wrong step. If you dont want to lose everything then stop doing so and take every profit that you have made during your run. You doesnt need to do this run when the statistics has been telling you that you will lose in the long run no matter what