[WA]

Look, university is a bit harder than high school. There's quite a step. Maybe your gifts don't apply that well to university and you have to figure out a way to learn that stuff – really learn it.

Feeling like you don't get stuff in grad school could be, because you lack the foundation you should've built earlier in college.

The solution might be as simple as: Get the foundation right, learn that stuff from the first years again and learn it in such a way that you have a good understanding. And then digest grad school material the same way.