Try not to let it dishearten you, the exams are passable - they're not designed to be impossible. A lot of success rests on your exam technique. Try to consider your approach to the exams and see if there is anything you can improve on.
I know college courses aren't an option for everyone, but if you are able to attend a course it can be really beneficial. Even if it's just a revision course or a mock exam day, it's reassuring to have someone identify your strengths and weaknesses and point you in the right direction.
