How to add debit card

See the following Apple articles:

Set up Apple Pay -> Set up Apple Pay - Apple Support

👉 Countries and regions that support Apple Pay

Countries and regions that support Apple Pay - Apple Support (EG)

If you can't add a card to Apple Wallet to use with Apple Pay

If you can't add a card to Apple Wallet to use with Apple Pay - Apple Support

• Apple does not approve or decline cards for use with Apple Pay. If your card was declined, contact your bank or card issuer.

What happens when you try?

What country are you in?