If you have a Microsoft 365 subscription, you can also access the Editor with advanced features on the desktop Office apps, ...
A feature in the Home versions of Microsoft 365 that is available for Word, Outlook and the Web. Microsoft Editor adds spelling, grammar and style checking for writers. See Microsoft 365.
To my knowledge, Microsoft 365 doesn’t offer a setting for always defaulting to Word for the web. However, if you create the file online and never save it to the desktop app, Microsoft 365 will ...