There is a 2 indicators
Stoch RSI and RSI
There are overbought and oversold area for 2 indicators
If stoch RSI (k and d) and RSI are below oversold , it is a buy signal
f stoch RSI and RSI are above overbought , it is a sell signal ,
I will made a few changes and update the strategy, but as it is , It can work with some crypto.