Luck on my iphone

As this article says:

If you forgot the passcode on your iPhone, or your iPhone is disabled - Apple Support

"You need a computer to follow the steps below. If you don't have a computer, borrow one from a friend, or go to an Apple Retail Store or Apple Authorized Service Provider."

Any idea why you can't download and install iTunes on your PC? Perhaps the 'Removing and reinstalling iTunes and other software components' section of this article will help:

Troubleshooting issues with iTunes for Wi… - Apple Community

Maybe a friend with a computer would be willing to help. If not, you can make an appointment at the nearest Apple Store for assistance. Instructions here...

If you forgot the passcode on your iPhone, or your iPhone is disabled - Apple Support

Make appointment here...

https://www.apple.com/retail/