I hope this helps and best of luck!
If you don’t have any real passion for your subject, you'll eventually run out motivation. You might struggle to attend lectures and complete assignments, and will feel generally miserable. Life’s too short to feel so down studying something you have no interest or passion in. In the long run, it’s better for your sanity to choose a subject you love to begin with. Same goes with when it comes to finding a graduate job after university!
I do think it is easier to do well in school when the tasks are of interest. While not every subject will be of interest, there are some you will have to take, such as general education requirements, when it comes to a major or studying a subject with a career in mind, it does help to care about the subject. As an example, for my bachelor's degree, I studied English. I am very interested in many aspects of the study of English, such as writing and editing, so it helped me through my undergraduate career. However, for my master's degree, I studied Leadership and Organizational Studies, which is under the Business field. To me, it was not as interesting and I wish I had chosen something that was of more interest to me, rather than something merely for the title in hopes that it would boost my resume.