I've been very happy with both Silverblue and Kinoite. I've installed it to all of my workstations now and can't imagine ever going back to a traditional distro.
Your comments suggest that you're already aware of distros like Silverblue so, if I may ask, how are these different than what you're looking for? Silverblue comes with several flatpaks installed, but you can easily remove these and you'll be left with a pretty barebones ostree image.
Assuming you meant ".docx files", those should open without issue in LibreOffice. As others have said, OnlyOffice is another popular option if format preservation is a goal.
What do you mean when you say the files are "not supported" by the tools you've tried? What, exactly, is happening and what are you trying to accomplish? The end goal wasn't clear to me from your post.
Getting Word to run under wine will require much more effort than copying the Word binary.