XAUUSD may make a big move to the down side. So, you look for SELL setup.
XAUUSD may go up to complete the correction. So, wait for the break of the level to enter the trade.
USDCAD may go down for a big move. Wait for the break of trendline and the previous low to enter the trade.
XAUUSD BUY opportunity. Wait for the breakout in 5m or 15m TF.
EURUSD short term SELL opportunity before the start of a BIG wave to the upside. So, you may look for sell according to your rules.