Hello

For cracking cat or any other exam you just need to do some smart work

Firstly you should not what your exam is , what's the pattern of exam, difficulty level ,how much you know about the exam , before studying for the exam know the exam

Then you should collect study material that is important for exam for that you can join coaching or by yourself that depends on you

After that study and study and give mock tests review you mistakes correct them donot repeat them

And just be consistent with your hard work and remain motivated

For further details regarding your exam you can have a look here

https://www.google.com/amp/s/bschool.careers360.com/articles/how-crack-cat-2020-in-first-attempt/amp .

Hope this helps

All the best