I think you need to enable Skia software rendering, which is less buggy.

Anyway, after Micro$oft 365’s sloppy redesigns and being pushy about marginal features, I dug out my 15-year-old Office 2007 CD to install it on Linux while getting used to open source alternatives. I switched from PowerPoint to Inkscape for graphic design when I grew up and I’m starting to adapt to LibreOffice and other FOSS for other tasks, too. It’s nice to leave Micro$oft’s shitty VBA, too.