The measure of success differs from organization to organization in professional sports. For the Dallas Cowboys, it always seems to be Super Bowl or bust. That was certainly the case in 2021, which made their early exit from the playoffs all the more disappointing. Despite that early exit though, finishing the regular season with a 12-5 record should probably fall into the success category.
Dwelling on the bad is a lot easier to do then focusing on the good a lot of times. Being a Debbie Downer is a poor way to go through life.