In the NFL 3-0 games are extremely rare.........1-0 games in soccer are par for the course.
It’s just that in the NFL a 3-0 game is called a 21-0 game. The NFL just engages in “score inflation.” it’s nothing but poor sportsmanship to complain about a game merely because you weren’t raised on it and because the US can’t field a team that can beat a team from the Third World.