Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Microsoft was providing the Microsoft 365 Classic version without Copilot at the end of last year in some regions, it was not universally available mostly it was available in Australia due to a local court ruling, and as far as I know they have now deprecated that offer.
If you log into your Microsoft account on this link (https://account.microsoft.com/services/) and choose to cancel your Microsoft 365 subscription, on the next window, you may be offered the option to switch to Microsoft 365 classic, if you do not see that option, then it is no longer available.