Use your PIN, pattern, password, or biometric method
Try your Google account recovery if the device offers it
Use Find My Device to erase the phone if you own it and cannot unlock it
Use the manufacturer’s account recovery service if available
Visit the carrier or manufacturer support center with proof of ownership
Perform a factory reset from recovery mode if you are locked out and have authorization
Enter the correct screen lock after a reboot if the phone requires it
If the phone is managed by an organization, contact the administrator
After unlocking or resetting, sign in with the previously synced Google account if prompted by Factory Reset Protection