Try the built-in recovery option for your device
Use your Apple ID to reset an iPhone if prompted
Use Find My Device to erase and unlock an Android phone
Use Samsung Find My Mobile if you have a Samsung account
Enter the correct PIN, pattern, or password after a restart if available
Use your backup PIN, backup password, or security question if set up
Unlock with fingerprint or face recognition if still enabled
Connect the phone to a trusted computer and restore it with recovery software from the manufacturer
Put the phone into recovery mode and factory reset it
Restore your phone from a backup after resetting
Contact your carrier or phone manufacturer for account recovery help
Visit an authorized service center with proof of ownership