Download and update apps with no card on file

How can I delete that subscription that I don’t use anymore?

I have the same problem with updating my WhatsApp, they don’t allow me to update the app because apple requires a payment method, supposedly WhatsApp is a free app and the updates too.

If you have subscriptions like iCloud+, have an unpaid balance, or you use purchase sharing, you must keep at least one payment method on file.