Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello
I am Abdal and I would be glad to help you with your question.
For the auto update issue on your mac, you need to contact the Apple support team who could help you with this issue.
Also if you have any Office subscription or Office license on your Microsoft Account then you can go to www.accounts.microsoft.com/services and install Office from here.
As of November 2022 update macOS Big Sur 11 version 16.67 or later version is required to get the Office updates.
I hope this information helps.
Regards,
Abdal