Derek Carr is a middle of the road QB. His record is what it says he is....77-92. He's been to one playoff game in his career. He didn't get off on the right foot because he was blowing up receivers on the field when he was performing at a mediocre level. BTW I don't buy the whole hospital ball crap some of the receivers were accusing him of.
Getting into it with his lineman Erik Mccoy in front of the Superdome didn't help. I realize other QB's have gotten after their teammates but they had skins on the wall. This guy doesn't. If he was a winner on the field it may have given him some leeway.
Add to that he hasn't embraced the city and the franchise and we are where we are. His final nail was refusing a pay cut when the like of Tyrann and Cam both took cuts to help the team and franchise. He's a me guy not a team player.