What is the best ATR multiplier for day trading?

In the realm of cryptocurrency day trading, the choice of an ATR (Average True Range) multiplier is crucial. But what exactly is the optimal multiplier to maximize profits while minimizing risks? Could you elaborate on the various factors that should be considered when selecting an ATR multiplier? Does it vary depending on the trader's strategy, the volatility of the market, or the specific cryptocurrency being traded? Additionally, how does one determine if a chosen multiplier is too high or too low? And ultimately, is there a universally agreed-upon "best" ATR multiplier for day trading, or is it more of a personalized choice? Your insights on this topic would be greatly appreciated.