PrestaShop

I'm looking to build an eCommerce website and seeking advice from professionals on the most reliable tech stack that I can use. Currently, the website is built on top of WordPress with WooCommerce, but the company has grown up, and evidently, the number of products have been increased. The site needs a fresh code because WordPress doesn't make it anymore.

The stack I'm most familiar with is PHP + Symfony + MySQL + Apache HTTP Server or NGINX. Headless eCommerce is the one I'm looking for, because of the huge complexity, it would be great to separate the backend from the frontend. Not sure about CMSs, because they had a huge amount of functionality that the application doesn't need. I've been looking also at PrestaShop, it seems ok, but not sure about customization and front-end integration. As a custom solution, I have found Sylius or Aimeos for the backend, but I'm not too sure about a frontend stack.

Could you please give some suggestions about the frontend stack and if the ones for the backend are ok?

I am consulting for a company that wants to move its current CubeCart e-commerce site to another PHP based platform like PrestaShop or Magento. I was interested in alternatives that utilize Node.js as the primary platform. I currently don't know PHP, but I have done full stack dev with Java, Spring, Thymeleaf, etc.. I am just unsure that learning a set of technologies not commonly used makes sense. For example, in PrestaShop, I would need to work with JavaScript better and learn PHP, Twig, and Bootstrap. It seems more cumbersome than a Node JS system, where the language syntax stays the same for the full stack. I am looking for thoughts and advice on the relevance of PHP skillset into the future AND whether the Node based e-commerce open source options can compete with Magento or Prestashop.