Iphone 5S has been disabled connect to itunes
Forgot my passcode and now Iphone 5S has been disabled connect to itunes
iPhone 5s, iOS 12
Question marked as
If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support
You must try to put your phone in Recovery Mode. It sometimes takes a few tries to succeed.
Read both those links above carefully as they show different ways to achieve Recovery.