Peaking Too Soon
Another reason why the Cowboys keep blowing it in the postseason is that they peak too soon in the season. We saw this in 2007 and 2022 because they had great regular seasons but fell flat. The sample size beyond this isn’t very big because they don’t get to the playoffs very often these days.

Dallas ran out of gas at the end of the 2022 regular season with a humiliating defeat against Washington. But they picked themselves up and hammered the Bucs in the Wild Card Game. However, they weren’t able to do this again against San Francisco. It was just another game too far for the franchise (via Bleacher Report).