I have made my EA. Help me SET UP/SHOW me how to backtest witn 99.9% ACCURACY

Hello....

I have made my EA, and plan to continue optimizing it. This EA is in MQL4, and runs on MT4 only.

In MT4, the backtesting quality is 90%. I know some EA makers find a way to model it on 99.9% quality.

I want to do the same.

I want you to please show me/guide me on the EASIEST and CHEAPEST way to be able to backtest my EA with 99.9% quality.

I will want some help on Zoom, maybe...a screenshare. I also need to know that YOU have backtested EAs with 99.9% quality...

Please show me proof that you have done this.

I want you to show me the apps, ways to do a 99.9% quality backtest in MT4 for my EA. If you can guide me accurately, precisely, and show me the cheapest way to do it...one that doesnt need paid software, if possible or some subscription.

Thank you!