So I'm a big fan of Star Wars. Please stop comparing Star Wars to Disney Wars, Quinn! That's like comparing Frank Herbert to Brian Herbert.
You should definitely watch the original trilogy first. You should always watch or read things in the order they were created even when there are prequels.
If you didn't like "A New Hope" you might not like it at all but it's worth a look. I think "Empire Strikes Back" and "Return of the Jedi" are better movies but "A New Hope" is the classic hero's journey. Then you can get into the prequels if you want and a lot of the pre-disney books are good. I'd skip the disney movies, they're total shit except Rogue One and they contradict everything in the earlier books.