Genuine question: how do you prepare for the phonemes of a market crash?

I know this sounds like another bear post, but genuinely am curious to people’s philosophies and strategies to this.

Not saying that the crash is just around the corner, or it might be, so how do people prepare for the uncertainty of it? Do you always hold a significant portion of cash so even if it crashes the amount in market becomes insignificant? Is there a set metric you use, for example every 10% drop you will take money out? Genuinely curious to hear some strategies and thoughts about this.

Edit: title should say prepare for the POTENTIAL of a market crash, I’m so sorry about the typo.