Is it normal to have difficulty with math?

It's not really a matter of what's "normal" so much as how each person's brain works. Some people find math intuitive and some people struggle with it, and it often depends on how you were taught it or how much effort you've put into it. If you feel like you're not good at it, maybe the problem isn't math itself but the method or simply that you haven't had time to really understand it.

Math requires a type of thinking that not everyone develops the same way, and it has nothing to do with general intelligence. What really matters is whether you've had the chance to learn with methods that work for you, because a lot of people find it difficult just because traditional teaching doesn't click in their brain. If you keep having trouble, often it's just about finding a different approach - maybe more visual, or more hands-on - and things change completely.

How long did you spend hating math before you actually tried to understand it? Because if a subject intimidates you, your brain shuts down and it becomes a vicious cycle - it's not that you can't do it, it's that the fear itself sabotages you. The trap nobody mentions is that a lot of people believe they're either "naturally good" at math or they're not by the time they're 10, and from that point on they sabotage themselves for decades.