Try removing your screen protector or device case and see if the touch screen will work then.
Since you already reset your device and it didn’t work, try replacing your screen.
You may have a faulty screen and digitizer, which is why your device won’t respond to touch.
If all else fails, replace your motherboard.13 May 2014
How do you fix an unresponsive touch screen?
Press and hold the power button and volume UP button (some phones use power button volume Down button) at the same time; Afterwards, release the buttons after an Android icon appears on the screen; Use the volume buttons to choose “wipe data/factory reset” and press the power button to confirm.17 Jan 2018
How do I fix an unresponsive touch screen Android tablet?
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What do you do when your tablet screen won’t work?
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Will a hard reset fix touch screen problems?
If the touch screen is completely unresponsive, factory resetting the device in Recovery Mode may help. However, this will delete all data in your Android device, including downloaded apps, photos, messages, contacts, etc.8 Jun 2017