As Rakim said, "Its not where your from. Its where your at." Dak has not had a losing season in his career as a starting QB since Jr. High School, his record as a Cowboys starter is 13-3, 9-7, 10-6, and 8-8. 2 NFL Playoff appearances, 3 Pro Bowls, and is the unquestioned leader of the team.
Here is your fact 1-6 during the 2018 season Dak was the first Cowboys starter without a no.1 WR, no.1 TE, and no.1 C on the field (even Landry's expansion teams had Dave Manders C, Norman Pettis TE/WR, and Frank Clark WR). Who's fault was that? The minute Jerry gave him a WR that could get open, the number 1 TE decided to come out of retirement.
Here is your 2019 fact, defense was awful that it could not stop a Philly team playing 2nd and 3rd stringers on offense. But Philly had their first team defense back for that game. This team had quit on the most overrated, useless, and no leadership Head Coach, Jason Garrett in the history of Dallas Cowboys football. When the Cowboys lost to the Bills, and Bears, the season was over and you can look at both of the loses caused by inadequate defense and incompetent Head Coach.
Through it all, Dak even when not making the playoffs, which was only twice in 4 years, kept the Cowboys 1 game away from the playoffs.