We do have a guide that describes how to use an administrator account to reset your Mac's login password when using an older version of MacOS though.

Forgotten a password? Can't be bothered to dig out the WiFi password for the router? Does your password usually autofill, but you need to know what it is? We'll show you how to find it in your Mac ...

If you need to change the password on your Mac computer, here's a guide on how to change or reset it (if you've forgotten the original password).