BIG problem with my iPhone 6s

The screen of my iphone 6s has broken a little bit, and it’s going crazy. It entered the passcode and have reached the number of tries. My phone is disabled and says connect to iTunes. When I connect my phone to iTunes trying to restore it, or just plugging it in, it is asking permission to go into my phone. Then tells me to say it is okay using my iPhone. My iPhone is disabled therefore I can not go into it to allow iTunes authorization. This is not the original computer this phone was set up with. That computer no longer exists.

Ãlso my Home button is not working as well.

HELP ME