I remember an xkcd that recommended using phrases as passwords. They use “correcthorsestablebattery” as an example for a password that’s more secure than “Tr0ub4dor&3” because brute-forcing it takes way longer because of its length, and it’s easier to remember because it’s not random stuff. Needless to say, I started using correcthorsestablebattery as my default password because of that uwu (I didn’t, and neither should you)

In technobabble this is called it has low entropy and is not secret (bottom knows and might repeat it to another top)