A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Open Word.
Go to File - Options
Click 'Save' on the left.
On the right, you should be able to disable saving to OneDrive and choose to save the Office documents to your PC not to the cloud.
Also, you need to disable the AutoSave function at the top left of Word, because that process only works when you save to OneDrive.