 Have you failed the IELTS test? If you have, it's probably because of this. Garbage in, garbage out. In computer programming, if you insert garbage into the system, then you will get garbage out. Similarly, if a person eats garbage, then they will have a garbage life. The exact same principles apply to IELTS preparation. If you're focusing on just tips and tricks taught by unqualified teachers, then you're going to get a low score. If you want to improve your score, then you need to improve the quality of the input. Focus on things that actually work taught to you by people who know what they're doing and your score will increase.