Show featured products first. Before the normal product list. See https://jameshwartlopez.com/plugin/show-featured-products-in-product-category-pages/

ShowFeaturedProductsInCategoryList.php

<?php

/*
   Show featured products first. Before the normal product list
*/
add_action('woocommerce_before_shop_loop', function() {

	if(is_product_category()) {
		$current_term = get_queried_object();
		echo do_shortcode('[featured_products_by_category cat="'.$current_term->slug.'" limit=3]');
	}
  
});