A game you "didn't know it was bad 'til people told you so"?
I'm talking about games that you still like but you had no idea were criticized so much.
The perfect example for me is Sonic Unleashed.
I admit that the game has its bad things, but I would have never imagined that it was so hated at the time... Although, that could be extended to the entire Sonic franchise, since for many years I was not aware at all of that "Sonic was never good", "Sonic had a rough transition to 3D" nonsense.
I rented Superman 64 as a kid, never knowing it was a universally hated game. We had fun with the weird multiplayer mode where you fly around in weird pod things. I remember flying through the rings too. The whole game makes zero sense in hindsight.
The game became that shitshow because Warner Bros execs got pissed that a "no-name" yuropeean company got the rights to make a licensed Superman game (because they were the only company that bothered to bid), so they did a lot of time-wasting requests to the developers.