Textbook Retracement Level EQR

This is what I like to see: the stock EQR pulled back to a 50% Retracement Level following an earnings high. This level matched with a past high price action and price hesitated for many weeks at the level before launching off it. The entry point was actually on a morning volatility spike 8/19/21 but this does not show properly on Tradingview data. Study this example.