It is not possible to show products that are manually purchased together for hundreds of products. Instead, you can add a simple database query to the existing module and display products that are not manually configured together based on ORDER DATA. This is very simple for you and I made chatgpt do it by adding a simple query to your existing module. Then I forgot to put the new script file in the child theme and it was gone in the update :D. You can also add something like 'those who viewed this also viewed these'. You can take the Product Recommendations for WooCommerce plugin as an example in this regard. https://woocommerce.com/products/product-recommendations/
Our goal is to win together. win win.