I subscribe to such things, not with a normal credit card but with a Privacy.com credit card. This allows me to easily shut off the card that only serves a single purpose and allows me to stop the subscription from my end rather than fighting with the company. (I do request cancellation but the card protects me if the request isn't honored.) I'm also protected from having that card's info from being leaked to scammers as a privacy.com card only accepts charges from the merchant that first charged to it.