How can i get more complete games.

Having a tough time in my sixties leagues keeping SPrated 9 innings for endurance to finish the game. I have lost many games where HAL pinch hits for him in the 7th and then my mediocre bullpen blows the save. I have them set to do”don’t relieve before F7, slow hook, and team strategy for relief pitching is conservative.I’m at my wits end. Anything else I can do?

Probably more of a pinch hitter problem than pitcher settings problem.
(Why I dislike NonDH leagues)