Please see the chart on the left.
The annotations on the chart are self-explanatory.
When you scan your instruments, be it equities, Forex pair or Cryptocurrencies, you will notice that this pattern repeats itself in almost all time frames and provides good buy trade opportunity whenever price touches the Macro Wave. Also notice that the slope of Macro Wave is pointing up when the candle touches it which also confirms that there is high probability that the price will try to go up.
If the candle that touches the Macro Wave is not a Grey candle, we would place a buy order above the high of a previous Grey candle because we want the price to "reverse first" to fill our order.
When you trade, please observe every chart keenly for multiple confirmations before placing any order.