Personally, I live the Office license my workplace pays for untouched, and use LibreOffice on my work Windows computer instead. Yes, it's slow and bloated. But

Personally, I live the Office license my workplace pays for untouched, and use LibreOffice on my work Windows computer instead. Yes, it's slow and bloated. But it's comparably faster and leaner, and it doesn't use undocumented APIs to take resources away from everything else running on the same computer and make every other thing unusable. And yeah, calc lacks features when compared to excel. So, avoid spreadsheets for complex problems.