I use LibreOffice instead of Microsoft 365. It is free and can load and save DOCX files. Plus I use LibreOffice in GNU/Linux so it is cross-platform and compatible.
At the moment, dumping VMware is taking quite a lot of my time too.
I still don't understand the rest of your comment.
It means you can put "Microsoft Partner" on your sales and marketing communications and some people will throw money at you just for having that on your shingle. In some cases businesses won't contract with anyone who doesn't have partner status.
I remember I tried this years ago, and it broke all the formatting that other window users see.
Office purposefully doesn't follow its own documents' standards, and renders with particular quirks, so that one gets the experience you report.