Think of drafts like personal or private pages. When you create a new draft, it isn't visible to anyone else on your team until you click publish.
Drafts are automatically saved when you create a new page or make edits to a pre-existing one. Your drafts are located in the dropdown menu under your name.
If you'd like to share a draft with another teammate, check out this article! Please keep in mind that draft sharing allows invited teammates to view a draft; not edit it.