New strategy based on 50/200 EMA

Saw this strategy on Reddit and tweaked some things to what I am showing to you now with a 80-85% win rate. You wait for the 50 EMA to cross over the 200 EMA either the same day or post/pre market before. After the crossover, you wait for the pullback and when a wick hits the 50 EMA and reverses, you enter a long trade until either the trading day is over or the RSI shows overbought. Anybody have any changes that would make it better or that I’m missing? I’ve noticed it works best on 15m.