Recursion is really hard.
According to
https://phys.org/news/2019-08-recursive-language-modern-simu...
Recursive language is a relatively recent phenomenon and even now is much harder to acquire than language and grammar. Recursion is probably the biggest thing that separates our communication from that of other species and gives such a big advantage.
That being said, if you are reading HN, you have already mastered a recursive human language. You have the ability to understand recursion. Just be aware that it is one of the more complicated things your brain does, and be patient with yourself. Keep working at it, and eventually you will get it. Don't become discouraged by the process and give up.