It won’t verify my identity on Apple Pay

Apple Pay is the way to pay. It replaces your physical cards and cash with a method of payment that is private, easier and safer. Whether you pay in a store, on a website or in an app. This is the new payment.

it is actually the same as paying contactless with your bank card, only via the iPhone.

See -> Use Apple Pay for contactless payments on iPhone

Use Apple Pay for contactless payments on iPhone – Apple Support (UK)

Learn where to use Apple Pay

Learn where to use Apple Pay - Apple Support

If you are talking about to verify your identity for Apple Card or Apple Cash

See -> Identity verification for Apple Card or Apple Cash

Identity verification for Apple Card or Apple Cash - Apple Support

I can’t use my Apple Pay cause my I’d couldn’t be verified

Sign in to your Apple ID account page and edit / update your Apple ID details.

https://appleid.apple.com

On the Sidebar click Payment methods -> then tap Payments Methods and tap Manage payment method.