upgrade libreoffice on lubuntu 20.10

I currently have lubuntu 20.10 and libreoffice

I see it does not have libreoffice base installed, and I want to keep it that way,

how to upgrade it to latest version?

I see alot of different reference to do it, any official ones?

Thank you,

If you can’t understand those alot of different reference, stick to you distro’s procedure of updating software. That’s it.