Hello! If you are looking into free options to backtest, I recommend you to use Traders Casa:
It’s free to use, but it includes ADs. However, I recommend you to pay a professional software such as TradingView, SierraChart, FXReplay…
For those who are already backtesting, I am developing a free backtesting template to put ur entrys and calculate ur average RR… I will be posting it soon! Have a good evening!