LibreOffice is the defacto office suite in the World of Linux since its initial fork from OpenOffice.org. Thanks to the Open Source community and users brave enough to install and try LibreOffice. To some users, LibreOffice is not the ultimate office suite software for their daily needs, and perhaps want to keep it cool with OpenOffice, WPS Office, Google Docs e.t.c.

Ubuntu come with LibreOffice pre-installed but you are free to uninstall it and try a different office suite software that works for you.
See how to Install Latest Apache OpenOffice on Ubuntu
Uninstall LibreOffice on Ubuntu
Uninstall LibreOffice on Ubuntu by running commands below in your terminal.
sudo apt update
sudo apt remove --purge libreoffice*
This will remove LibreOffice and its dependencies. Next is to clear out the local repository of LibreOffice packages using the commands:
sudo apt clean
Clear all LibreOffice dependencies that are orphaned – no longer required.
sudo apt-get autoremove
Bye bye LibreOffice!.
You probably want to autoremove before cleaning.
Cleaning is the last step.
(BTW, note that cleaning is just useless in case of uninstallation… it just removes the installation cache files in /var/cache/apt/archives)
how to uninstall libreoffice if there are two versions of libreoffice installed, for example libreoffice 7.4 and 7.5
You need to upgrade or uninstall?