thats not a bad rank! But there is definitely room for improvement.
I would recommend doing past papers and completing homework ahead of school classes to try and understand concepts before being taught them in depth at school. Note: you can't expect to get good marks without practicing - the amount of practice questions you do will ultimately reflect how well you go in exams (start with easy ones, progress towards hard ones nearing to your exam date)
Try and ask your teacher for resources of maths questions (preferably from past hsc papers) sorted by topic; most schools have them, they decide to not release them until later for some reason and do those whenever you can!
Studying for x1 maths becomes enjoyable once you understand concepts and can easily apply them to any given problem, so I guess try force yourself to
math by doing lots of questions as I did