I want to disable Copilot in Word on MacBook Air

This morning, I opened a new document in Word, and I got a prompt to "Press the icon or select ⌘+ \ to draft with Copilot." I do not want to use Copilot. When I search for a way to disable it, I'm directed to either click on Copilot on my toolbar or find it in Authoring and Proofing Tools in Word and uncheck it—Neither of these works. Clicking on it in the toolbar takes me to Privacy Preferences, and the only option is "Collapse Copilot automatically." Going to Settings/Personal Settings/Privacy/Connected Experience" and unchecking the analytical tools does not work either. Thanks.

[Re-Titled by Moderator]