Iphone Unavailable without forgot password option (no time showing upon opening)

If you forgot the passcode on your iPhone, or your iPhone is disabled or unavailable -

Click on the link for instructions on how to reset your passcode without a computer if you have iOS 15.2 or higher.

If you see a iPhone, iPad, or Apple Vision Pro unavailable message or Security Lockout screen - Apple Support

Click on the link for instructions on how to reset your passcode using a computer.

If you forgot your iPhone passcode or your iPhone is disabled - Apple Support

if you tried multiple times ,iPhone may be disabled and locked .

to unlock this you connect the device to mac and restore the iPhone.

Note: Restoring iPhone will delete all the data in device and stores data only iCloud which which is backed up