A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
To be honest, despite all this, the easiest option seems to be to simply add links to all of the commonly used folders into one folder and pin it to your quick access available via the "Browse" button?
Actually, the easiest option is to disable automatic update and revert to 16.0.6366.2068, the version before this inexplicable change.