I can’t download anything from app store

Did you actually cancel the subscription properly?

Managing auto-renewing subscriptions -

If you want to cancel a subscription from Apple - Apple Support

If you didn't cancel it properly, you will need to speak to Apple Support to resolve the issue and unfreeze your account.

Direct link to Apple ID Support options -

https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0998&symptom_id=20198

World-wide Apple Support -

Contact Apple for support and service - Apple Support

M1 Mac mini, macOS 14.4;  Watch, series 7 GPS/cellular, watchOS 10.4; iPhone 12 Pro, iOS 17.4.1; TV 4th Gen, tvOS 17.4; HomePods, audioOS 17.4 and Airport Express w/ Airplay 2