Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello, good day and thanks for your question. I understand that you are looking into cancelling your Microsoft 365 subscription.
For this, it will be best to check and confirm that the device that you will purchase will include Microsoft 365 as the current subscription that you have can still be used if you will be switching to a Macbook as you can go to account.microsoft.com/services and install it from there.
If you are still decided to cancel, the documents that you have will still be accessible but you will have limited actions that you can do and you can also see the Microsoft support links below.