hey
Hey. In my case, I improved considerably this year. Last year I had no idea what was going on, and I hated Physics. I didn't have any basic grasp of mechanics or anything. Even in the beginning of this year, I struggled heaps. I got 60% on my first SAC (Motion), even though I studied heaps. Our next SAC was electronics, and I did really well (80%, it was a REALLY easy paper, he practically gave it to us the week before the actual SAC). This gave me confidence, and I went on to become rank 1.
I would say that I improved because I just did questions. I started the year carefully curating a set of notes, but as that didn't help, I ditched that and just did heaps of questions.
To succeed in VCE Physics, repetition is the key. You'll start to understand stuff as you do questions. Also, as Odeaa said, there are way more resources.
Enjoy!