If the "Last Compatible Version" prompt does not appear (or you are trying to get a specific version number like Pages 5.6), you need a backup.
The most reliable way to get an older version is to re-download it from your account history. This works if you have ever downloaded Pages in the past using your Apple ID. on your Mac. Click on your icon in the bottom-left corner. in your list of previously purchased apps. (cloud) icon. download older version of pages
A pop-up will appear stating that the current version requires a newer macOS. If the "Last Compatible Version" prompt does not
The Library of Congress maintains a massive collection of archived websites. This is often more detailed than other archives and is an excellent tertiary option if the Wayback Machine does not have the data you need 1.2.1. Summary of Techniques Wayback Machine 1.2.1 Best for recent changes: Google Cache 1.2.5 Best for rendering old browser look: OldWeb.Today 1.2.1 on your Mac
How to Download an Older Version of Pages for Mac, iPad, and iPhone
: Mount the DMG file or insert the disc, run the installer package, and complete the installation wizard.