Hi Jacky,
This happens because your device is currently joined to Azure AD, so the system assumes that recovery keys should be stored in that directory rather than a personal Microsoft account.
If you want to “quit” Azure AD and go back to a standalone or personal Microsoft account setup, you’ll need to disconnect the device from Azure AD. You can do this by going to Settings > Accounts > Access work or school, selecting your Azure AD account, and choosing Disconnect. After that, you can re‑join the device either to a local account or to a personal Microsoft account, which will then give you the option to store BitLocker keys in that account.
Keep in mind that disconnecting from Azure AD may affect access to organizational resources, policies, and apps tied to your work account. If this is a corporate‑managed device, I recommend checking with your IT administrator before making changes, as they may have compliance requirements for key storage.
Once the device is no longer Azure AD‑joined, BitLocker will offer the Microsoft account option for recovery key storage. Alternatively, you can always save the key to a file, USB drive, or print it for safekeeping.
I hope the response provided some helpful insight. If you find this answer useful, please hit “accept answer” so I know it addressed your concern.
Jason.