Video formats? There literally are VLC, ffmpeg and MPV. Every normal format works on every Distro.
Get most apps from Flathub.org, use any Distro you want but I recommend Fedora Kinoite.
Word documents for sure, PDF editing actually too. PDF editing is cursed in itself, but Okular + PDF arranger + Firefox + sometimes GIMP (for actually censoring) work.
Have a look at Stirling PDF, a project combining all of these effords. Its not yet a fully graphical desktop app but this command will work on Fedora Kinoite: