This strategy basically buys when close price of n previous + current candle is above ribbon and sells when below.
You can change the type of MA directly in the parameters.
Best use on 2H TF.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.