I do cider all the time, if you get the right stuff, it’s ridiculously easy and the results are wonderful.
Just buy the yeast and make sure you buy PRESERVATIVE FREE cider. It can be pasteurized or unpasteurized, as long as it’s PRESERVATIVE FREE.
Did I underline PRESERVATIVE FREE??
Heck, if you buy a gallon of that stuff and leave it on the counter, it will start fermenting on it’s own without adding any yeast - that actually happened to me and is what got me into homebrew.
But those are wild yeast - you take yur chances.
Better to go to a brew supply store and pick up a Wyeast 1968 London ESB pack.
Will give you a bubbly, almost champagne-like very dry hard cider. Truly delicious!
I read once if you take your hard cider and leave it on the porch when the temp goes below freezing overnight and then pour off the good stuff in the morning and throw the ice out you can get some REALLY hard cider.