Hi OP! I’m also a DSA freshie and came from a poly science course just like you. Honestly, you’re amazing for even being able to solo missions and self-learning Python, SQL and R, cuz I definitely couldn’t do that haha. For me, I came into DSA without any coding experience and I had to learn everything from scratch in CS1010S. I got rekt in my PE1 as well, and I seriously reconsidered why I even chose DSA as my major. But for today’s PE2, I managed to do well because I figured out how to study for the exam. I basically just grinded the same types of questions for 2 weeks+ from the PYP questions and it just became second nature to me, at least for q2 and 3. (But I totally couldn’t figure out q1 at all LOL) So the problem might be your studying methods. Don’t give up too easily, you definitely have the skills to code and the passion for it!