Display a product's primary category only after loop-title

Hey guys,

I’ve been looking for a solution to display product categories within Enfold Product Grids after the title and as usual I found a veritable solution here in the forum and made some adaptions:

add_action( 'woocommerce_after_shop_loop_item_title', 'avia_add_product_cat', 5);

function avia_add_product_cat()
{
    global $product;
    $product_cats = wp_get_post_terms($product->id, 'product_cat');
    $count = count($product_cats);
	echo "Lieferdatum:<br/>";
    foreach($product_cats as $key => $cat)
    {
		
        echo $cat->name;
        if($key < ($count-1))
        {
            echo ', ';
        }
        else
        {
            echo '<br/>';
        }
    }
}

My question: Do you guys have a function as well to add only the Yoast SEO plugin’s primary product category instead of all categories? Or is there an easy fix to make the above function work like that?

I know this request is not only Enfold-related but since I couldn’t find anything elsewhere, a solution would be much appreciated.

Thx, Regards
Michael