Cavill got three chances (four, if we’re counting the Snyder cut as a separate thing), it’s not on him that the material was lousy-to-terrible.
Coates is a strong writer so I’m in on that. Abrams has an eye for drama that would probably work well if the material he’s given is solid. Black Superman, traditional Superman, I’d be interested in hearing more.
Also LAWD SPARE US from Man of Steel 2. Superman was world weary before becoming Superman in Man of Steel, I cannot imagine how fucking intolerable he’d be as a character after coming back from the dead.