Cannot reset password using Apple ID
Have you tried this method?  From this source:

Use Recovery Mode to reset your password
You'll need to boot your Mac into Recovery Mode in order to access the
password reset tool. I've found the easiest way to do that is to turn
off your Mac.
With your Mac turned off, press and hold the Command and R keys on
your keyboard, then press the power button. Hold in Command+R until
you see a progress bar show up below the Apple logo. You can also get
into Recovery Mode by restarting your Mac and trying to time the
keyboard combo of Command+R, but in my experience, starting with your
Mac turned off is the most reliable method.
With your Mac now in Recovery Mode, click on Utilities in the menu bar
followed by Terminal. A new window will show up, waiting for you to
enter a command. Type &quot;resetpassword&quot; as one word, without the quotes,
and press Return.
Close the Terminal window, where you will then find the Reset Password
tool. A list of all user accounts on your Mac will be on display. To
reset the password for your account, you'll need to set a new password
for all users. Make sure you write down the new password for anyone
who shares your Mac.