@Sanaa Al-Tamimi, Thanks for posting in Q&A.
From your description, I know you want to change the user account type via Intune.
Based on my research, there is no related feature in Intune can achieve this, however, you can manually remove the user from local administrator group, then the user will be a standard user and you can change the account type to the standard user, or you can create a new user account without adding the user to local administrator group, then you can change the user account type.
Location: Computer Management > Local Users and Groups > Groups > Administrators and remove it from the administrator group.
Hope above information can help you.
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