My iPhone is disabled because I don’t know what my passcode is

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

follow these steps

1. hook the device to a computer
2. backup the device
3. shut down the device
4. power on the device while holding the home button
5. the computer will get a message in iTunes that says the device is not working properly
6. press restore
7. when the restore finishes iTunes will ask you if you want to restore it from a backup or start fresh

passcode removed

If you would like to know how this works I am happy to tell you