Breadcrumbs Issue with Subcategories (Taxonomy)

My question is the following. I have enabled breadcrumbs with Rank Math and everything seems to work.

However, I do have a lot of posts which are nested and organized into subcategories.

For example, my Comma Rules articles, they are in English —> Grammar —> Comma Rules

Where Grammar and Comma Rules are Sub-Categories of the Primary Category “English.”

Now, I found that if the Primary Category is set to English, then the breadcrumb will only show “English” in the breadcrumb.

But what I obviously want is for the breadcrumb to show: English | Grammar | Comma Rules | Post Name

I have found that I can achieve this by setting the Primary Category to the Subcategory “Comma Rules” instead.

Is this the solution for this problem or does this actually hurt SEO if I set the Primary Category to the subcategory “Comma Rules”?

That’s the only way I see I can solve this issue.

Kind regards,

Marcel