Hi @Carmella Payne
Thank you for posting your question in the Microsoft Q&A forum.
Option 1: you will need to access https://mysignins.microsoft.com/security-info.
Look for Microsoft Authenticator > Choose Delete.
After removing it, you can uninstall Microsoft Authenticator on your phone.
Option 2: Go directly to the app and remove the accounts. Then you can uninstall it.
How to sign out from Authenticator - Microsoft Support
My recommendation is to remove all of the accounts in Microsoft Authenticator before uninstalling the app.
This will prevent sign in loop.
I hope this information helps.
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