Hello Subhash,
Mathematics is the subject which needs practice and lots of practice to master the key concepts. If you are facing difficulty in Mathematics then you should first learn the concept and how to apply the formulas correctly and then practice the questions topic wise.
Solve the questions from various books, firstly from NCERTs and then from other reference books also. Take help from your teachers, family and friends.
The only way to make mathematics easier for you is by practice.
You can ask if you have any other query.
Good Luck!