Windows AD, Azure AD

Hello everyone

I connected with Windows AD and Azure AD.

When I create a Windows Account in Windows AD, it is also created in Azure AD.

However, when you join a domain with Azure AD on your PC, you can register a device only with Azure AD, and you can't register a device with Windows AD.

The User Account is sync, but I think the device is not syncing.

I've tried various settings through search, like GPO, device options... but they're still not working.

How can I sync my device?

I'd like to ask for your help.