Hello Aspirant

For cracking jee mains luck factor is the least the you need . If you are too lucky then it's possible that may some of your guesses can be right.

But you should be totally dependent on your hard work and smart work. So you need to focus on the easy kill topics which means on strong chapters which will definitely fetch you marks even if tough questions come.

Secondly you need to focus on your weak areas so that you can strengthen them. Also practice as much mock papers as you want because this is the key to success and analyse each paper like what your weak point and strong point .