Nice paper backtest, probably will fail in the future, why? :(

[semanau]

Hi,

Long time out here and out Forex. Now I'm back, just for fun.

We all know most of EA, paper or visual baktests tend to fail in the future.

Now I have one of the hundreds of strategies that I have thought:

3,5 year paper Backtest, more than 2000 trades:

6 losses (20% each)
14 wins (11% each)
20 wins ( 6% each)
22 wins ( 3% each)
52 wins ( 1,5% each)
151 wins ( 0,5% each)
1875 wins ( 0,1% each)

My question is, Why this stratetegy will be loss in the future and how to fixed?

Thanks for read