Nearly as important as passwords are the responses to security questions that many websites have implemented for additional security.
If a site allows you to select your own questions, do so.
You not only don’t have to be totally honest with your responses to questions, but you probably shouldn’t be (honest).
For example, if the question is about your mother’s maiden name. Use any answer but the truth. A good answer might be telephonebooth.
How would you remember that? Store it in your password manager along with the record that takes you there. When the question is asked, you can then just copy/paste and your good to go.
Following this practice this will foil a thief who has obtained the accurate data from a public record or from social media.
The (current) US President lies an estimated 90% of the time, so why shouldn’t you?