Which video game did you bounce off of at first, but then tried again later for it to become one of your favorites of all time?

One of the first video games I owned was FFXII, gifted to me for Christmas after I had finally saved up and bought my own PS2.

I did not understand how to play the game well. Basically kitted out every character as archers, and if I ever struggled (which was frequently) my go-to was to chain mist attacks and use up all my mana at once. I would often sure a lot of time just waiting for mana to regenerate after any had fight. It was slow but worked, until the bomb king boss in the forest. I would finally kill it, and then the thing would revive, and I would have nothing left. Tried and tried until I managed to kill it a second time and it revived again.

I gave up out of frustration. Came back to it a couple years later, a little bit wiser, and found the game much easier when the different characters had different roles and I didn't blow all my mana at the first sign of trouble. The bomb boss was actually a breeze, and I noticed this time that each revival was with fewer hp than before, so it only revived 3 times before it was done for good.