You believe the test is rigged, therefore any advice is worthless to you, because you'll pass when they want you to (going by your logic)...
Just remember that when you pass, it wasn't your driving that was responsible, but instead it was pure luck, and the examiner needed to pass a few more people...
Of course, you could learn how to drive better... But why try and improve if it doesn't matter eh? It's rigged after all, you could be the best driver and still fail because of a quota...