Hello student I can understand your problem as usually most student face the same problem. Physics is most difficult subject among students of class 12 but its also very interesting once you start studying with full concentration. Physics is a subject which need your basic knowledge. I suggest your to plz refer ncert only after completing ncert you can start studying any reference book or any module set.
But make sure you study physics daily do clear your doubts with your teacher and friends.

Never skip a single word/topic first clear it then move forward most students skip topics and face problems later.

Feel free to comment if you have any doubt
Good luck