Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
So if you disable the enrollment and use of Microsofts authenticator you do need to make sure others are enabled which I mentioned. So at https://entra.microsoft.com/ go to Protection -> Authentication Methods -> Polices: Turn ON the ones you want to use for all users. So "SMS" is text codes (which is going away next year fyi). "Third-party software OATH tokens" is things like Google Authenticator. Click each one you want, click Enable, then click All Users and save.
I personally am using Google Authenticator because it backs up my codes to Google and if my phone dies I can replace it and get all my codes back easily. And my phone is through work so what if I get let go and they keep my number? At least with Google I will be able to get back into all my accounts. SMS is a dying option.