To fix this problem, you need a computer with iTuned installed, a usb to lightning cord, and the phone. First open iTunes. Second you need to plug the usb into your (windows,macOS,chrome,etc). Next you need to hold either volume up and home button until you see the apple logo or power and home. Once you see the apple logo, release the power, volume up. Once the phone says “connect to iTunes”, connect the phone and pc. Follow the steps on your pc and you should be good to go!