Before trying additional recovery methods, could you please confirm whether you normally sign in to Windows with a Microsoft account or a local account? On the sign-in screen, select Sign-in options and tell us exactly which options or icons are available. Also, does the message specifically say that the PIN was entered incorrectly too many times, or does it mention an incorrect password?
Regarding your attempts to trigger Windows Recovery Environment, at what point were you forcing the computer to shut down? Ideally, the shutdown should be forced while Windows is still starting, when the Windows or manufacturer logo appears, rather than after reaching the sign-in screen. After interrupting startup twice, the third startup should normally display Automatic Repair. Please let me know whether you ever see Preparing Automatic Repair, Advanced options, or any other recovery screen, or whether the computer simply continues directly to the normal Windows sign-in screen each time.