I have been dealing with this issue for years, going back to the Open
Office days.
How do you install Libreoffice under Ubuntu?
After all those years, you never googled, you never asked anybody, you
never tried anything with or without success? You never continued an
online discussion clear up things that remained unclear or did not work?
Where are the step by step, clearly documented instructions?
Last Sunday two fairly detailed manuals have been written for you
exclusively but you prefer to not reply a single word.
When are they not either on the download page in LO or a clear link on
the download page?
Installing Debian packages, downloaded from website or from ppa, is more
or less the same procedure regardless of the respective application.
Can we expect that you come up with the exact same questions under
another nickname next year?
Can we assume that you are a troll?