I usually play better when I am not too focused on scoring points, just focusing on getting shots right (any shots/order)....
This is a consistent rule for me, if I want to follow a certain strategy, i normally do not do well.

The more I practice, the better I get at it, but the learning curve is different from video games.

Lastly, I am stubborn, so I stick to default settings, but if you are getting frustrated, make the game easier, add more balls, etc.... you will likely have more fun!