If you cancel Netflix you delete the data and you can no longer watch it, right?
You cancel Netflix, and I think you can still watch the month to the end, but after that you can no longer watch Netflix because you have canceled your subscription and are therefore no longer paying.
Addition to jojo:
If you download what you still want to watch and then turn off your internet every time before you go to Netflix, you can watch what you downloaded over and over again.
If you cancel your subscription, you will of course no longer be able to watch Netflix. I'm not sure if Netflix is so accommodating that you can watch the paid month (or the paid period) to the end. As soon as this period is over, you will of course no longer have access to the Netflix offer.