Hello,
You can try adding HTMLBlocks in the after add to cart area under Theme Settings >> Single Product >> Add to cart options.
Screenshot:
https://gyazo.com/8ba79c4bb564e3f7a7d95ef3dc9af9a8
Another method consider using the Woocommerce builder of WoodMart allowing to create custom templates for product pages and other functional pages that are not editable by default. Woocommerce builder is the inbuilt functionality widget included in the builder you use on the site.
Please check this manual:
https://xtemos.com/docs-cat/woocommerce-layouts-builder/?theme=woodmart
Best Regards.