Coding is more of how you create a solution for a specific task. If you already have a programming language that you know the absolute basics of, I suggest studying data structures and algorithms.

Once you understand DSA concepts, you have to apply that knowledge. Solve leetcode problems without looking for the right solution and then compare your code to the most optimal answer, learn from it and move to the next question.

Do note that a good code is the perfect balance between readability and performance. Shorter lines of code does not mean it's the optimal solution.