The document manager is where you create, open, and manage your documents; it’s what you see when you open Pages and no document is open.
To see only shared and recently edited documents, tap Recents at the bottom of the screen. To see all of your documents, tap Browse.
When you’re in browse view, the location you’re browsing is shown along the top of the screen. For example, if you see Pages at the top and iCloud Drive at the top left, you’re viewing the Pages folder on iCloud Drive. To see files saved in other locations, such as a different folder on iCloud Drive or on your device, tap the link in the top-left corner to see the Locations list (you may have to tap more than once), then tap a location.