Fred Warner facilitated the turnover in the Cowboys' redzone. The Dallas D sensationally bailed out the offense by turning the ball over on their own 2 yard line. Now this is where you need your $40 million QB due an extension to show up and develop a drive. The game is still only 0-7. The D just prevented a touchdown and the Dallas offense receives the ball in the second half.
Prescott had a clean pocket yet underthrew Gallup with a loopy throw that lacked velocity. Then he held onto the ball too long and took a sack rather than either taking a shot downfield (worst case scenario it's an arm punt) or used his wheels to get the first down. He did neither and the 49ers made it 14 zip when they got the ball back.
The point being this is what you would expect from a practice squad QB like Rush or a back up not a top 10 paid QB that would be due to be paid top 5 money if Jerry is dumb enough to pay him.
He simply isn't good enough. This isn't 2001 when a team could win the Superbowl with a bus driver. The rules and everything are geared up towards needing some explosive plays on offense and a QB that can make those. This game finally showed all the Dak Lovers that he really isn't the guy. Imagine throwing three interceptions and simply laughing after each one. Oh the intangibles...