Restore my iphone disabled

Repair the home button first.

If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support

If your iPhone is showing the black background "Disabled" screen you must use a computer w/ iTunes (a Mac or Windows PC) to do the Restore process in iTunes.

Since you do not have a working home button you need to use 3rd-party software such as REI to set your iPhone into recovery mode (which is required for iTunes to restore it).

You can use the free version of ReiBoot to do this:

https://www.tenorshare.com/products/reiboot.html