Many people think that a teacher only teaches. This is one part of their job, but this is not the only reason you need a teacher.
We know that it is difficult to study, to set up a routine. But you need to do it!
We have books and other resources that you can use to practice before your exam.
Teachers often have thousands of hours of experience, they can see your mistakes and show you the best way to improve.
Studying for an exam is not always fun. Teachers make the experience more interesting, useful and natural.
No one wants to repeat an exam. Your teacher will know when you are ready and they will get you to that moment faster than self-study.