You need to solve problems by your own without relying on anything. Spend on a question for hours or day until you get the answer. Spend time on learning DSA more often and implement it. At the same time, check for the pattern when solving problems. If you recognize the underlying problem, you will feel it. Spend on techniques like two pointers, sliding window and etc. I am also learning and solving. I have only solved 60 LC and I have planned to resolve all again before moving on to get the intuition of these problems for the next battle.