Gorilla glass got cracked and the touch stops working sometimes

hello everyone

i have a nokia 5 device almost similar to the nokia 6

so what happened i happen to drop my phone and as a result my protective gorilla glass developed cracks at top right corner of the screen which extended to the upper end of the display, it was workinng fine

but over a few days i have started noticing that screen sometimes freezes or ghost touches show up on screen

so i just want to know which alll parts of my display migh be defective or needs to be changed

changing gorilla glass top willl get my problem solved.?

or i need to change digitizer as well

or i need to replace the whole screen assembly