When I was like 12 years old I put over 100 hours into FFVII (which was way more than any game I'd ever played) and didn't realize you were supposed use multiple save slots.
Right before the Sephiroth fight, the file corrupted, and I was incredibly disappointed. So much so that I never touched the game again.
You can typically yell spam your way to a win if you were a derp but the game will give you such a pinch if you jack Ramza's levels way up getting past this fuck. I definitely bricked one early run by having a completely fucked average level and being unable to win any random fight. If you really hate that fight on a deep level you can set Ramza's zodiac at the beginning of the game such that it's Wiegraf's worst matchup.