Hello saif

hope you are doing great. As per your query  I would glad to tell you that average student and intelligent is just a mindset of students . Its is only way to explain your failure due to lack of hardwork and dedication . Firslty you need to be self-confident to clear the exam . Then you need to follow a proper roadmap and follow it consisently every day . Start preparing with your fundamentals and update yourself daily with the current affairs . Solve aptitude and quantiative part as it will require less time to make command on them . Give mocks and go with flow

Hope you found this answer helpful. Good luck for your future