Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Compare Microsoft 365 Plans on Microsoft's website describes the three Microsoft 365 plans that are available to individuals.
On that page you will find a chat link:
Nevertheless, you are more likely to get the correct answer sooner by asking here in Microsoft Q&A.
Keep in mind that all subscriptions to Microsoft 365 that you purchase directly from Microsoft (which is the simplest and most straightforward way to subscribe) are technically purchased by your Microsoft account, not by you personally. You, of course, own your Microsoft account, which in turn subscribes to Microsoft 365. Your Microsoft account pays for the subscription with one of the payment methods that you add to your Microsoft account.