Hi Léane. Thank you for your questions. There are different understandings and demarcations on the disciplines of humanities. But in general, a narrow understanding of humanities includes fields like literature, history (sometimes including art history), philosophy. Linguistics and Anthropology are often considered to be social sciences, but they have close correlations with humanities fields as well.
Some schools also have a more general major like liberal arts, or humanities, which I assume would include learning these above disciplines as well. If your school allows, you can also do double major or even triple majors in the disciplines you want to. In addition, I don't think being "good human resources"(which I am not clear what it is) is a necessary or sufficient condition to excel in the field of humanities. As long as you have passion and interest for these fields, you should go for it. In fact, philosophy majors are among the majors who score the highest in GRE! (See http://dailynous.com/2019/10/11/philosophy-majors-gre-updated-data/) So there is definitely value to it, but grad school may be a different story.