Hi kaertonas,
Thanks for reaching to us.
1. Please go to Theme Settings > Single product > Add to cart and you can add content before and after add to cart button https://ibb.co/Kx0cKcGc But, it will applies to all products.
2. I kindly recommend you to use Custom Product layout, which is built with WoodMart WooCommerce builder, then you can place it where you want. And you can build layout for specific products.
Further, you can read more about the Layout Builder here: https://xtemos.com/docs-topic/woodmart-woocommerce-layout-builder/
Regards,