My own mother lost access to her Facebook account(s) because she had never set up Two Factor Authentication. And yes, I checked! She WAS using a unique password only for Facebook, which was a suitable number of letters and numbers. She uses Facebook to support the books she has written about gardening. She had quite the Facebook following (over 23K), and some of her posts went viral, getting likes in the 100K range. After months she was FINALLY able to get it back! Setting up 2FA is easy; if you have parents using Facebook, please do it for them!