I've often thought what holds Physics back is that they have to make it so you can do A Level Physics without doing A Level Maths, which some people choose to do and to me is a very odd choice. If they could assume more maths confidence they'd be able to introduce you to more demanding concepts. Even so, I encourage you to see beyond the test paper and enjoy what you're actually being taught. I think there is interest to be had.
In short I love Maths and Physics but Physics is where my heart lies and it's because it's not just a field of numbers and formulae. While it's nice to swim in those waters from time to time I am very much excited by seeing what we humans can do when we put Maths to work in the real world. We can mathematically describe how
everything works! I can see how far a bullet will fly, I can predict how loud a sound will be at a certain distance from its source, I can work out how much force I need to place on a wire before it snaps. These things are all very useful and cool to me. AS Physics gives you a brief introduction to these aspects of physics in the small ways its maths restrictions allow it to.
A2 physics might be better if you're not doing it yet. Generally includes gravity/space stuff, electric/magnetic fields, particle accelerators. Cool, useful physics like you hear about on TV, but not quite relativity yet!
As for the paper itself, you can eliminate mistakes because of units and things by doing loads of past papers. It's the same tricks every time and you are smarter than the question
. I don't really like that aspect of the course myself but most A Level exams are this way.