[croh]

To get math intuition, you need some memorization along with practice. In school, you focus lot on remembering things for exams, that pays off later. As you grow, it becomes difficult to remember mindlessly.

1. Do exercises from competitive-exam books written for secondary school children.

2. Try to solve as many as possible exam papers in stipulated time.

This will help you to build intuition. Intuition comes only after doing something for long time (unless you are born-genius). Memorization plays very important role in learning maths, language, music instruments. On second note, don't fear to change resources if you're not comfortable. What I mean is - in childhood if you like teacher, you excel in subject. So you have to find material which match your temperament. Wish you best luck !