Probably a classic answer, but Dark Souls. Played it a bunch of times and really hated how clunky it was, it felt unfair and poorly made, and the graphics felt a little outdated.
Then I took a couple months break, looked up some guides on how to get good and it became my absolute favourite game of all time.
The sequels are all good too! Bloodborne also rules! Elden Ring is the bomb too!
On the flip side, I really liked the idea of Sekiro until I played through it for a while. Then I got very mad that I wasn’t getting better and gave up. I’ve heard this is a common gripe for people like me that like to dodge in the game a lot.
Haha you and me both commented about dark souls literally minutes apart, what a world.