You are right. I apologize for been a little bit too lazy for not going deeper.
I am a coder and did a lot of coding of strategies. Always try by yourself.
I had a very good strategy with R/R around 1:1 and 66% success. That means really very good in long term. It worked for 6 months (my account grew up 50%) and … now it doens’t work anymore. I stopped all that before losing.
I will code that in an EA and make some statistics over long long periods back and maybe improvements could come.