i don't know, I can think of more examples of bad writing than bad directing,
let's see, black Adam, visually it was fine, it had some great scenes,but just terrible plot, or something like the Solo movie, or the Ghostbusters 2016, or Pacific rim 2, the last jedi, the mummy 3, the mummy reboot, star wars prequels, the village, blade 3,
these had good directors that made visually good looking movies with good effects,
and I know you're gonna say that you loved some of these, but the writing wasn't that good,
maybe the effects weren't always great, but they were ruined by bad scripts, they didn't fully deliver, they weren't the best,
( you can even add bad rewrites in here, rewrites count as bad writing ruining the movie)
I can't think of examples of great scripts ruined by bad directors ( I'm not talking about script changes or rewrites, I'm only talking about a movie with an amazing script only ruined by a bad filming alone ) maybe I missed something but which ones?