This tutorial will show you how to copy your account's language and region settings to the welcome screen (aka: lock screen), system accounts and new user accounts in Windows 11.
You can copy your account's current display language, keyboard input language, date and time regional format, and country or region geographic location (GeoID) settings to the Welcome screen and system accounts and/or New user accounts to change them to be the same as your account (current user).
You must be sign in as an administrator to copy your language and region settings to the welcome screen, system accounts and new user accounts.
Option One: Copy Language and Region Settings to Welcome Screen, System Accounts, and New Users in Settings
Option Two...