How to fix unresponsive iPhone 7 screen?

My iPhone 7 touch screen is not working. It is unresponsive to touch. I can't even turn the phone off because I can't slide the turn power off slide. And it won't turn off with simultaneous pressing of the home screen and side buttons. I can't even restore it because I have to turn Find my iPhone off for that, and I can't reach settings because the screen is unresponsive. How can I fix it?

You need to go to an Apple Store. Their Genius Bar will be happy to help in any way, and so long as you don't require a new phone, it's absolutely free!

You take the phone to an Apple store and get it repaired. There's nothing that YOU can fiddle with or change that is going to fix this issue.