I’ve tried adding payments to my ID but it doesn’t work

See this link If your payment method is declined in the App Store or iTunes Store - Apple Support (IN)

Your credit card needs to be from the same country and valid in the same country as the country settings on your Apple ID, most of the time that's the problem

Also, I would'nt share your credit card number on a public forum

As the screenshot shows, contact iTunes Support for assistance. See the Apple Support articles below for contact information.   

iTunes Support – world wide   -

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