Let’s put it this way.
When your starting pitcher strikes out seven in five innings and gets touched only for a pair of solo homers, and when your bullpen puts together four shutout innings with just two baserunners allowed and one of those is on an intentional walk, you really should win the game.
Unfortunately, the Cubs offense is just buried right now. They have scored just 15 runs in their last seven games and somehow managed to win four of those, largely on absolutely outstanding pitching, as they’ve allowed just 14 runs in those seven contests.