What is a good delta for put options?

Excuse me, could you please elaborate on what constitutes a "good" delta for put options? Is there a specific range or value that traders typically aim for when considering put options, or does it vary depending on the individual's investment strategy and risk tolerance? Furthermore, could you explain how the delta of a put option changes in relation to changes in the underlying asset's price and the passage of time, and how this might impact an investor's decision-making process?