I do remember the words keystone
Not my best day.
then asks for the password which I inadvertently changed and can't find.
Slightly different for Ventura, Passwords now separate from Users & Groups, and the option is under your account in Users & Groups, I have just enabled my resetWe all have those. Don't worry.
We now know that the "lost" PW is highly likely to be your Admin PW.
If you Open System Preferences > Users & Groups > Password...........
Look to see if you have allowed your Apple ID to reset your Admin PW - as below:
View attachment 38340
Ian