Practice, Practice, Practice. It is a difficult task for a straight bowler to try and swing the ball. Especially when you are a beginner and have not a lot of experience in doing so.
I used to play dead straight...then I bought a new ball and I had to open up and swing the ball, because the new piece was hooking out of control. Then when I got good at that and was forced to play straighter again, I couldn't do it and sent everything left (I'm a lefty).
Now I am confident in both, yet don't feel like I have an A game..which basically means I suck at bowling...which is true.
The question is why do you feel you need to move left? If the lane starts to dry up, figure out what your ball is doing. Are you leaving and or tripping the 4 pin? Move left 1/2 to 1 board and keep the same target.
I'm not sure if this is what you're doing because you didn't say a whole lot, but many new bowlers think the adjustments needed are huge drastic changes. In the world of the THS...you can move your feet and keep the same line for a long time....then once you move too far to feel comfortable to hit the same line, then you can change your target. i.e. a 2 and 2 move.
Bowling is fun, just remember that. Half of the fun in the beginning stages is learning and seeing results from something you learned while not bowling well. So you can't strike cuz your ball is coming up high...so make a small move and see what happens...if it works, next time you get in that situation....then you'll know what to do
I'm not sure I even answered your question, but it's late...and I'm tired
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Formerly SGC300