@MBII
Thank you for your post!
For your MS Teams app, can you try disabling the "Enabled for users to sign-in" option to "No", save your changes, and see if that resolves your issue? If not, can you try that for the rest of your apps.
You can also try going to your enterprise apps to see if any are enabled and disable or delete them to see if that helps:
Enterprise Applications -> All Applications -> "Application Type - Enterprise Application", "Application Status - Enabled"
Lastly, you can always try installing the AzureAD PowerShell modules onto your current PC, get a full list of AzureADServicePrincipals, see if there are any that you created that needs to be removed.
Connect-AzureAD
Get-AzureADServicePrincipal
Remove-AzureADServicePrincipal -ObjectId "<ObjectID of Service Principle"
Referenced link:
How do I delete an Azure Enterprise Application given the delete button is disabled?
If you have any other questions or are still having issues deleting your tenant, please let me know.
Thank you for your time and patience throughout this issue.
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