How to I cancel my free one week Apple TV trial?

AppleTV+ contains shows that Apple has made such as Dickinson, For All Mankind, See, The Morning Show, and others. Similar to Netflix Originals like Stranger Things and House of Cards. This isn't a way to watch things like Fox News, live sports, or any other television show. This is in no way advertised as a way to decrease your cable bill. Apple is just getting in on the streaming wars with Netflix, Hulu, Disney+, and others.

You would need to have your Mac updated to Catalina in order to have the TV app and access Apple TV +

It has been very clear that this was a streaming service for original Apple content, and at no time was there an indication that it would include access to other bundled content.

If you no longer want to use the service you can go into your account and cancel the subscription, see the link above.

View, change, or cancel your subscriptions - Apple Support