Linux Capable has published a tutorial showing you how to install OnlyOffice on Rocky Linux EL9 or EL8.
How to Install OnlyOffice on Rocky Linux EL9 or EL8
Learn how to install OnlyOffice on Rocky Linux using RPM with DNF or Flatpack with Flathub in this step-by-step guide. Get up and running with OnlyOffice in no time!
How to Install OnlyOffice on Rocky Linux EL9 or EL8 - LinuxCapable