Concerns about opening & saving files with the built-in apps in Catalina
i just bought a new macBook Pro (13-inch, 2020) with its built-in catalina 10 OS. however, i had it updated again and its now running in catalina OS 10.15.6 and im having loads of concerns opening & saving files with the built-in apps (keynote, numbers, pages, etc). do you happen to have some solutions on how to go about these concerns? thanks!
[Re-Titled by Moderator]
MacBook, OS X 10.11