Hey there

Physics is tough do not think it's your fault. It will sound weird but if you want your physics strong then get a good teacher for you. Then after each topic he teaches you do not jump directly to JEE level try to first understand the theory and then practice HC Verma. HC Verma is the best book imfor physics. Try thinking about the problem and do not leave any doubts. Try to learn a concept and apply it to as much problem as you can it will increase your thinking.

Good luck