If you don't have feature parity, you really are in trouble, because then you are competing with Google Sheets, on which actually competent engineers are working.
It's not the competence of the individuals that makes the difference. Microsoft is also full of Very Smart People. Organizational structure and ego management strategies drive the engineering choices that lead to bad software.
Sorry, but imo Office/Microsoft 365 passed Google's options a while ago and have only gotten farther ahead. Either work for my needs, and I'm shifting to self-hosted OnlyOffice, but MS is definitely ahead on this one.