Price Action Indicator reliability

Live streaming trade on YouTube really has popularize the price actions indicator. Here we will discussed with example how reliable the price action indicator without any indicators assistance? You look at this at first glance it really works especially when you watch youtubers consistently winning from the price action trading. But after further observation - it seems there are flaws in it. After watching the market moving to proof the reliability I caught the failure of this system and it has taken me a step back from believing in the price actions. This can be observed on the USD-CAD 4H time frame candlestick chart.

Notice the first green candle stood higher than the previous which indicates it should continue further up at least for another 1 green candle but instead it goes way further down. This failure make me doubts and probably that's why most of the forex automated robots fails because they are heavily relying on the price actions without further confirmation from other indicators such as MACD and Stochastic or Bollinger Bands.

This conclude that nothing can beat the very fundamental of technical analysis which is the support / resistance.