Considering that Proxmox is essentially a bunch of virtualization tools and a web interface slapped onto a minimal Debian ...
Collabora Office also has a mobile app for Android and iOS — LibreOffice only has a third-party viewer app for Android. The mobile app is not as smooth as using Collabora in Nextcloud or on a desktop, ...
If you're looking to migrate from Windows to Linux, you'll want a distribution with a familiar UI and a dependable base. VailuxOS easily checks both of those boxes.
Several Linux distributions are specifically geared towards multimedia creators, but Modicia OS stands out to me for several reasons.