MS office

Just recently got arch on my laptop and I'm liking it quite a lot. A breath of fresh air for old hardware and with tlp some substantially better battery life as well.
My big problem is that I use MS office quite heavily for work, including OneNote and OneDrive.

I found onedriver which is an excellent OneDrive on-demand solution.
But I'm at a loss in regards to office. I tried wps, only office, LibreOffice, MS office online. But they all have at least one document of the ones I'm working on right now that doesn't get rendered properly. Can't believe how poor Microsoft's online solution is tbh. I have a pretty big word document that gets completely butchered.

Anyway, what are my options? Is it worth trying something like cassowary? Setting up a VM is probably just going to ruin my battery life and negate any performance advantage I gained by ditching Windows.

Thoughts?
Btw, if this is the wrong community for this kind of question I apologize.