Cracked glass in Lenovo P2 P2a42

I have a problem with my lenovo p2 . My smartphone just fell and the screen is cracked , the display is here at 100% , the power button , volume up/down and the camera button works . but there is no touch. As i can see on other devices , even when the screen is cracked , the touch still works but on mine it is not the case at all. If you could tell me what to change such as digitizer or lcd or any other thing please. I have basic skills when it comes to the electronic devices fix.