Forgot Password For Mac
Boot the device in recovery mode using these step
Turn on your mac and continue to press and hold the power button (black button top right corner) until you see startup options window
Select The gear (options)
Click continue
You should now see the utilities window, which shows options such as restoring from Time Machine, reinstalling macOS, and using Disk Utility.
From the Utilities menu in the menu bar, choose Terminal.
6.In the Terminal window, type resetpassword, then press Return to open the Reset Password assistant.
7. At the Reset Password window, click Deactivate Mac, then click Deactivate to confirm.
8. If you see an Activation Lock window, enter your Apple ID email and password, then click Next.
9. At the Reset Password window, enter your new password information, then click Next.
If this window shows multiple user accounts, click the Set Password button next to each account name, then enter the new password information for each account.
10. When the password reset is completed, click Exit.
11. Choose Apple menu > Restart, then log in with your new password.