I'm 4 years into having to use outlook after switching jobs and no longer being able to use google workspace. I continue to be frustrated by the confusing and arcane processes required to do basic stuff like fine previously declined meetings, book an out of office that doesn't spam everyone, use search and actually have it find stuff, automatically place emails into folders in a sane fashion, actually accept/decline a meeting and not have it randomly stay as "tentative" and so on.
Comparatively, outloook feels like a complete mess.