Unlock iphone 13

Try a forced restart.

• Press and quickly release the volume up button

• Press and quickly release the volume down button

• Press and hold the side button.

• When the Apple logo appears, release the button.

Force restart iPhone - Apple Support (IN)

Hello,

It appears you may have a disabled mobile device or forgotten device passcode. Refer to this support article for various methods that you can use to resolve this. Which one you can use depends upon your equipment configuration. --> If you see an iPhone or iPad unavailable message or Security Lockout screen - Apple Support