are positionally staying back with large numbers staying back on defense in their own end.
But exciting games in football, baseball, and soccer come down to total number of exciting plays, not necessarily total number of scores. Although usually they go hand in hand.
Hypothetically there could be plenty of great defensive plays in one game that make it low scoring but still exciting.
A baseball game with a few home runs robbed, a few guys thrown out at home plate, but still 1 to 0 final. That could still be exciting. Balls and strikes can even be interesting if you have a good view of the strike zone.
A low scoring football game with several goal line stands or forced turnovers when other team has ball in the red zone.
A low scoringng soccer match with some great keeper saves or defender goal line saves or just barely missed shots.