In my opinion you need a curriculum. If you are willing to spend, I suggest a bootcamp type of program and algoexpert. Otherwise an equivalent free version, i.e. a guided program into development and algo/ds.
The problem with leetcode and self study is that, as a student, you don't know what to focus on, everything has uniform weights.
The problem with leetcode and self study is that, as a student, you don't know what to focus on, everything has uniform weights.