Have too low IQ? Yeah sure, I guess.

Be slower at it than the norm? Absolutely.

I only learned Algebra by learning programming and through that I learned how to think abstractly (abstract just mean "hiding details" - think of how a child draws a car. You can't tell it's colour, brand, model, etc, yet you can tell it's a car, even though all those details are hidden). Once I got that, I was able to follow videos from MIT that taught me more of the maths, giving me a theoretic foundation for programming. Now I'm doing an Algorithm course (also MIT) and feel like an "actual programmer" (because I felt like a "fake programmer" before that - though that still sometimes returns). After that I intend to learn more about SQL because I'm painfully lacking in that regard.

Anyway, I've been at it since 2005 when I was a 20-something kid, and there's always something new to learn.

FYI: I made a dependency graph of a bunch of freely available MIT courses, left is a dependency for stuff on the right: https://thaumatorium.com/articles/mit-courses/