To launch the guide, press the Xbox button. Select Profile and System > Settings > Account > Remove accounts. After that, choose the account you wish to remove and then hit Delete to confirm.
Select Profile & system from the main menu, press the Xbox button to show the guide, then select Profile & system. Select Add or change a profile, and then pick your preferred one. Select Sign out and then your account from the same menu. select Delete Account from this window if you wish to cancel your subscription before it begins.
However, if you remove your profile and saved games and achievements, there’s no way to restore them. Delete Profile and Items may be used to cancel the profile and any associated saved games or accolades.