party poopers
If you're finding that you need more practice exams than what is already available, I would suggest that you're not maximising the amount of learning that can be done from each trial exam. Try to thoroughly understand every question, do trials exams more than once until you're getting 100% all the time (sure you might end up memorising how to do the question, but that's another exam skill to learn; to not look at a question and then immediately start thinking of the cookie cutter methods to get the answer).
After that, if you need more recent ones, pressure your teacher into getting more. If you don't have checkpoints (and don't want to shell out the money for it), borrow from the school or public library. If they don't have it, request them to get it.
If even then you've chewed through all the resources (unlikely), at that stage you probably would be able to make up your own questions.