Use the correct PIN, pattern, password, or biometrics
Try your backup unlock method if available
Use Google Find My Device to erase the phone remotely
Use Samsung Find My Mobile if you have a Samsung account
Perform a factory reset from Recovery Mode
Sign in with the Google account previously synced to the device after reset
Contact the phone manufacturer or carrier for official support
Visit an authorized service center with proof of ownership
Restore your data from a backup after unlocking or resetting
Set up a new screen lock after regaining access