Luck is part of wins and losses in the NFL.
There are people who don’t want to talk about it. There are people who don’t want to acknowledge that the oblong ball bounces randomly, and luck is a factor in football even more so than in other sports. When you have a sport that plays a larger number of games and has two teams compete in a playoff series instead of a playoff game, sample size for determining the “best team” increases, which reduces randomness. But one game is frequently the difference between going home and advancing in football, and one bounce of the ball can determine a game.