
When you see a prompt window, enter the command below: mount –rw –o remount / Press Enter.
If you enter the password incorrectly repeatedly, it should pop up with a "Forgot your password" option. The easiest way is to reset the router, which will reset everythingto factory default settings. You can set a new pin after a factory reset, then restore photos, contacts and other data from a backup. In this blog post I will cover how to enable it with Intune MDM, and not how to setup and configure AzureAD password reset backend service.
If you are unable to unlock lock screen by using Google Account/Forgot Pattern or Samsung “Find My Mobile” (for Samsung users), then you can always use Android Screen Removal software mentioned above.
Otherwise, the only options are to reset your Pixel to factory settings or try unlocking software.