We have the regulation in Germany, but afaik it's not EU-wide. The "Gesetz über faire Verbraucherverträge" basically says that if something can be subscribed to easily online, then the company also has to provide an easy unsubscribe. It goes into detail how such a button should look like, how labelled, what data the confirmation page has to list and how fast the confirmation has to be (immediate).

It's horrendus in Germany trying to cancel a mobile phone subscription, internet service, gym membership or the likes. You have to jump through hoops like sending a registered physical letter, 3 months before the end of the service period for it to be considered a valid cancellation ("Kün­di­gung"). Without this, you're forced into paying for another year.

EU regulation is badly needed to cut out this anti-consumer nonsense.

There is a law that requires that subscriptions can be cancelled online within "the click of a button" with automatic confirmation. (since 2022) If no such option to cancel is implemented by the provider the minimum contract duration is void and you can cancel immediately.

German reference: https://www.verbraucherzentrale.de/vertraege-reklamation/kue...