I have many areas of interest, how can I study all of them?

To the OP. Another point. A few colleges have intensive required core humanities courses that will give you exposure to, among other things, the classics in philosophy, literature, and history. Some of these are foundational even today for social science disciplines – Aristotle, Plato, Freud, Max Weber, and others. I was fortunate to have been required by the curriculum at Reed to take 2 years of a humanities sequence that amounted to the equivalent of 1.5 courses (“units” in Reed’s nomenclature) per semester. Other colleges have a more flexible core, with more electives. Reed’s was very demanding and wonderful. It has been made a bit more flexible in recent decades, including broadening beyond the strictly “western” humanities canon.

This didn’t take away from my ability to take intro and advanced courses in a number of disciplines (including language study). But the hum requirement had what I consider perhaps its most important effect of giving all students a common language of discourse.

My point here is to say that you should regard general humanities requirements as providing an entry to many disciplines in the humanities and social sciences. IMO opinion exposure to such foundational literatures made me a much better social scientist than I would have been had I begun my college studies with a series of intro courses to separate disciplines. To be sure, I did begin some such intro courses at the same time I was taking the humanities sequence, but the latter was still foundational.