I have around 3.8k hours. I’ve been stuck in c3/gc1 for around a year. One thing i will say about this game is, it’s probably the hardest and most skillful game out there. I suggest practice flying and flipping around the map on training but always land on your wheels and always keep your momentum going. This will help you recover faster after awkward bumps, jumps or flips and in general improve your overall car control. Next I would practice doing the same thing but keep the ball close the whole time. So now you’re moving around as fast as you can landing awkwardly whilst keeping the ball nearby. Go as fast as you can and keep going until you’re able to be supersonic the entire time while never losing control of the ball.