@joe Whiplash has a lot of clear focus on the story of a music student wanting to be the biggest name in jazz by tolerating JK Simmon's abuse, and the tone of the ending is that it was all good actually because he did the thing. The tone is meant to be very raw and grounded, but above all uncomfortable, and the antagonist and protagonist are both basically vindicated for being horrible.

The wall meanwhile shows an abusive system turning students into faceless meat and giving the main character PTSD from a war started by fatcat oligarchs and fought against sentient hammers. So much focus is on the music and surreal imagery that the first time I saw it I was unaware there were any reoccurring characters at all.

Basically the opposite movie in every way that comes to mind.