Or just a Magneto movie where he doesn't just randomly decide to start murdering someone or betraying everyone around him because "he only knows vengeance" or some other bullshit to remind you he's supposed to be the bad guy.

Seriously, he'll be strategic, logical, and the most insightful character throughout most of each movie and then to balance that out, they need to make him throw all of it away to do something overtly evil that deviates from his plan or the plan suddenly has a twist that involves someone's death with little to no good justification. Why? Because he's supposed to be the baddie.

For once, just drop the act and let us have a cool Magneto that makes sense and doesn't do deranged shit. Idgaf if he's meant to be the villain or an antagonist, everything he does is more interesting than the tired platitudes Prof X and crew give us. The plot always ends up the exact same. In Dark Phoenix and even for a bit in Apocalypse they decided to ease up on him and let Magneto just be cool, but they still had to add enhinged, murderous rage scenes and spontaneous moments of betrayal that are otherwise completely inconsistent with his character and goals.

We don't need a clear black and white, good vs evil story.