Two secrets anchor an Awazon account. The password opens it. The recovery phrase restores it if you lose the password. Anyone holding the phrase owns the account.
The password
Long, unique, generated, stored in an encrypted local password manager on a device you control. Not in a browser autofill, not in a cloud-synced manager, not reused from anywhere.
The recovery phrase
Write it on paper, in your own hand, and store it somewhere only you reach. Do not screenshot it, do not save it to a synced note, do not paste it into a page unless you are running a recovery you initiated. No genuine login asks for it.
Why paper
A phrase on paper is a phrase that cannot leak through a compromised device or a cloud account. It is low-tech on purpose.