how do i cancel my youtube tv subscription

If you subscribed through your iTunes account :View, change, or cancel your subscriptions - Apple Support

I want to cancel my subscription to youtube TV

Look at the link I advised four posts above this one.

You might like to spend a few minutes reading this documment'

https://discussions.apple.com/docs/DOC-5951

How do I cancel YouTube tv from my iPhone

Follow the instructions in the link posted in two of the above repleies on this thread

To cancel subscriptions bought fromiTunes, see this Apple document.

https://support.apple.com/en-us/HT202039

To cancel subs bought elsewhere you need contact the supplier.

Bcorong