I ve try updating my payment subscriptions but my card is declined
Why my card declined not being charged
iPhone 6s Plus, iOS 15
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Did you already try the troubleshooting tips mentioned in this article?
If your payment method is declined in the App Store or iTunes Store - Apple Support
If this does not help, you should contact the official Apple Support directly about that. Only they can look into your personal data, to find the reason for this issue.
Use this link as a start:
Subscriptions and Billing - Apple Support
Or give them a call by selecting the phone number for your region from this Apple page:
Contact Apple for support and service - Apple Support