best browser for office (microsoft) 365?

Hello all.
Which browser is best for office 365, particularly word and powerpoint?
I have herd from other blind mac users that office 365 is much more accessible than google suite.
My question is will read all work correctly in word documents?
Secondly, while trying it for the first time, I discovered that option back spade does delete one word but does not announce that word. I was using both chro and safari.
Would be happy to know experiences of other users. I had great experience with google sheets and pretty good experience with google slides. But docs have been a problem. So exploring office 365.