The one class I took in college that was relevant to my job, at all, was the AI course on structured vector machines, which were irrelevant after two years. For most programs, correctness is a nice-to-have, forget speed or responsiveness or data structure choice.. and in production code, non-technical and constant factors override theoretical solutions. University computer science courses, on the whole, are quickly obsolete or obsolete to begin with, incompatible with software development as it's practiced, and are best reviewed in the week before seeking a new job to score well on leetcode. The best skills you're going to learn are the metacognition you're picking up in university, the ability to learn new languages and adapt to new environments and solve new problems, not anything that's actually taught.