I am locked out of my MacBook account

Have you attempted all means described in above article?

First try the standard steps to reset your Mac login password.

If you still can't reset your password, erase your Mac

If no other solution is successful, you have the option

to reset your password by erasing your Mac.

Hopefully in advance of drastic measures you have backed-up

your contents on at least two separate external storage drives

and at least one of those was a Time Machine derived backup.

https://duckduckgo.com/?t=ffab&q=restore+from+time+machine+backup+macOS&ia=web

If you still need help, please contact Apple Support.