The old saying is offense sells tickets and defense wins championships. Although football, more than most sports, is truly a team effort.
Just look at the 2010 Chargers. They had the #1 offense and defense and didn't make the playoffs because of their special teams.
Secret Base did a great video on them: https://youtu.be/UAL5X3TRA2A?si=aAsLLZ4Im5EsWsNo