Trying to unlock iPhone six with no computer can anyone help

See this Apple article: If you forgot your iPhone passcode

If you forgot your iPhone passcode - Apple Support

If you don't have a computer (macOS odWindos OS):

Ask a friend, acquaintance or family to use their computer, or at a public library.

Alternately, visit your local Apple Store or Apple Authorized Service Provider and they should be able to help you out.

You will first have to make an appointment due to the pandemic.

Call Apple in your region see: Contact Apple for support and service

Contact Apple for support and service - Apple Support

If your iPhone running iOS 15.2 and newer, see:

How to remove your iPhone, iPad, or iPod touch passcode without a computer

How to remove your iPhone, iPad, or iPod touch passcode without a computer - Apple Support

For the iPhone 6, as the latest iOS version it can run is 12.5.5, there is no possibility to restore a disabled iPhone without a computer. This possibility is introduced with iOS 15.2. As your device cannot run iOS 15.2, your only possibility will be to use a computer