Short-Term Bollinger Reversion Strategy Which Pairs to Trade

Hello traders, I hope you all are having a great start of the year.
I have been using Baby Pips’ [Short-Term Bollinger Reversion Strategy] and it is basically free money. However, I open very few positions with this system per week and I am looking forward to see if I can maximize the number of trades opened with this strategy. Currently I only use this system with USD/CAD, CAD/CHF and EUR/CAD, so I would like to know if there is anyone of you that also use this system with other pairs.
Also, if you have other tips to this system feel free to say!