Why is statistics so hard?

Well math is sequential, which is probably what makes statistics such a challenge for people. What I mean by that is that you can't learn specific high-level concepts without learning the building blocks first. So, before you can understand something like calculus, you need to understand variables, algebra, and other things. If there is a gap in your knowledge or you haven't fully mastered some of the building blocks, statistics can be a real challenge. Just get plenty of practice and find help if you need it. If you're willing to put the work in, there's no reason you can't master statistics!