Can I get PAGES for word processing ?

From the App Store. It's free.

https://apps.apple.com/us/app/pages/id409201541?mt=12

Your profile shows you are still using Mojave, and Pages v11.0, currently in the Mac App Store requires Catalina 10.15.* or later for installation. There is no version of Pages available for Mojave or earlier operating systems, as Apple does not provide past, full installers for Pages, Numbers, or Keynote.