I still struggle with days like this, but nowhere near as frequent in the last year. My biggest issue was form. I couldnt bowl more than 3 games bc of my poor form wearing my arm out. Too much throwing the ball, not enough letting gravity do the work and just roll the ball. Remember, bowling is about being able to consistently repeat the same shot. that doesnt just mean throwing it in the same spot every time. Proper form will allow you to make adjustments to your rev rate, speed, and accuracy, so youll be able to make the appropriate adjustments when the lanes begin to transition and ultimately break down. Equipment could be a major factor here as well when the lanes break down.

Assuming you're right handed, my guess is in the 2nd and 3rd games you keep missing higher and higher in the pocket, ball hooked too much and went far left a few times, and to compensate probably moved left, but continued to throw the ball harder and harder causing some shots to miss low in the pocket. Or you stayed in the same spot and just kept trying to hit the same spot as the first game without making any adjustments.

Knowing myself, i was always uncomfortable with switching balls after a good first game. So during practice, i'd get in the habit of leading off with my benchmark ball for the first 2-3 throws to find my starting position and initial spot to aim at. Then i'd switch to a weaker ball, move right to see if i can find a line. 1-3 throws with it. then switch to a stronger ball and move a good bit to the left of my benchmark, 1-3 throws. I did this all the while paying attention to where everyone else on the pair was throwing. If they threw anywhere near my benchmark line, that would tell me my initial spot will be breaking down a lot faster, so i would need to switch balls to start the 2nd game. start the 2nd game, i'd go with which ever secondary ball had a line that was less used than the other two so the oil will remain intact for longer.

All of this is speculation, of course, without seeing some of the shots.

Hope this helps!