I have a kindle...one of the originals....the kindle with keyboard. It's super for reading novels, IMO. No glare in the sun and less bright than an led screen. My kids and dh have kindle fires, I prefer reading on my kindle, than their kindles.
I don't have Kindle unlimited, but there are plenty of free books out there. I get an email with daily free or cheap books. I can't remember the exact name, but I can check if you are interested. I do have prime, so that gives me some short term rentals of books, I think.