It's not all Dak's fault. Garrett was so desperate to succeed he didn't recognize that it was only because of the wall that was the Cowboys offensive line that Dak had success.
Kellen Moore is a better quarterback than Dak. He played behind lesser offensive lines and produced.
Dak is a rookie when it comes to playing under pressure because Garrett wouldn't make him play in the preseason unless the full offensive line was intact.
That line is gone, now. And except for a defender dropping one pass and a penalty that wasn't, Dak threw 5 interceptions today.