Losing Faith in SP

I hate to say it everyone but after watching the Vikings get dismantled I’m officially losing faith in Sean Payton. Mainly, I don’t know if he has the ability to correct his own shortcomings. Help me understand why the Saints have had the same issues year after year after year? Surely, at this point you have 5 plays in your playbook specifically designed to break your opponent who is picking on your biggest weakness. An upper cut of some kind. Instead these guys just get surprised every year.