In high school, before having begun with a degree in mathematics, I derived pleasure from studying [mathematics]. At that time, I was naturally looking forward to university, since it meant no more subjects that I found uninteresting, such as languages, and instead complete focus on what interests me. I am now a semester and a half into my degree, and find the passion I have once felt fading. I believe there are several reasons: I underestimated the difficulty and was ill prepared (from a 'study technique' perspective), resulting in having to catch up through only understanding things superficially (for example, skipping proofs). The situation has improved this semester, but nonetheless, I am having trouble gaining a deep understanding due to the workload being very heavy (too many courses, in my opinion), and therefore only having time to gain a broad but shallow understanding overall. I also simply find some courses to be incomprehensible and would much prefer studying the topic from a book, by myself. A major factor contributing to my sentiments is the lack of the freedom I had before, in choosing what I wanted to study and going at my pace, as well as picking the resource I liked the most. I should note that despite feeling this way in the first semester as well, I passed with satisfactory grades (above-average even, perhaps).
One potential solution I am considering is choosing several books to self study the topics covered in the courses (and hence not going to the lectures). Most professors put their lecture notes online, so I would be able to see which theorems, etc. were presented. Despite this, there is still the risk of missing out. In any case, I plan to revisit and review everything during summer holidays.
Did anyone face similar feelings during their studies (not necessarily in mathematics)? What did you do?
Edit: I am located in Central Europe. I should specify that I did not like high school math (lack of rigor). What I liked was the free time (compared to now) that I had, which provided me with the opportunity to study more advanced math on my own.