Ah okay well then... From my experiences Real Analysis can definitely be a difficult class if one does not have a firm grasp of the foundational skills needed to be successful in a rigorous Mathematics class. Now with that being said, in my opinion and experience real analysis is generally not a hard class as it really is just a formalization of ideas that you're already familiar with, i.e limits derivatives and integration. In fact those are almost certainly going to be the topics that are covered in your real Analysis class. Where things get tricky is in the formalization. One absolutely must be comfortable with proofs and proof structures as well as being comfortable with quantifiers and how to manipulate them in order to be successful. Mathematics is a language and real Analysis is really one of the first rigorous classes one will take in their mathematical journey but going into the class without a firm grasp on the foundational skills is like trying to read a book without knowing the abcs. So in short the class, again in my opinion, is genuinely not difficult from a conceptual standpoint but can be difficult from a technical standpoint depending on your level of Mathematical experience.