I came across a ZDNET article
"This Linux distro is so Windows-like, it even comes with Microsoft apps"
<
https://www.zdnet.com/article/this-linux-distro-is-so-windows-like-it-even-comes-with-microsoft-apps/
>

Perhaps, this is the Linux distro to help you (your colleague) to a Linux
OS based desktop
Hosted at SourceForge -- download link:
https://sourceforge.net/projects/windows-ubuntu/

--
Arun Khan