My iPhone is on unavailable
I forgot my passcode and after entering the wrong passcode several times my iPhone screen says IPhone Unavailable
iPhone 11 Pro Max, iOS 16
Please follow the instructions in this Apple Support document:
How to reset your iPhone, iPad, or iPod touch when you forgot your passcode - Apple Support
If this is not successful, you will need to use a Mac or PC to reset the iPhone using this support document:
If you forgot your iPhone passcode - Apple Support
Once the phone has been reset, you can restore your data to the phone using your most recent backup.