Alp🏔️ it is a bit difficult and i can relate to that but you can study the format of the test and research practice questions and mock tests related to the exam, it will definitely give you an idea of what the test will be like and what it contains.
Don't lose hope many people have gotten into an SEHS school with free resources because even if you made it or not, you wouldn't have anything to lose.
Just try your best and believe in yourself anything is possible.