You can’t learn from feedback you refuse to read. Open the graded paper.

Feedback only exists once you have read it, and an unopened paper leaves you with the grade and none of the reasons. Avoiding it makes sense emotionally and costs you the one thing all that effort bought, which is a specific account of what went wrong. The mark says where you stand; the comments say what to do next.

Open the last thing you were handed back, even if the term has moved on. Read only the comments and write down the two that repeat. Those repeats are the habit to work on, not the grade.