How do I fix 'Wrong password' error after changing language on MacBook Pro?

“How do I fix 'Wrong password' error after changing language on MacBook Pro?: So i changed my language from english(india) to english(us) it restarted the laptop and now it asking name and password my password was only a 4 digit lock and now it is showing error”

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Keyboard Password Error After Changing Language:

OK. So, what’s the error?

A. Add Zeros:

If you need more digits, then try putting a few “0”s in from of it.

B. Reset the Password:

You may need to reset it. Use this Link: If you Forgot your Mac Login Password - Apple Support