The ability to access a later version

Hello!

Unfortunately, due to the new update of the Pages app, it is no longer supported on the Catalina 10.15.7 operating system.

I have been using this app for a long time and many documents I need are stored in it. My job depends on it. I cannot update the software version, as this version is convenient for me.

Please tell me if it is possible to access a later version.

Thanks in advance.