Shopware 6 - How to add a product or list of products to custom plugin?

I'm really new to Shopware 6 and I'm learning it through videos and documentations.
I created a custom plugin, added a controller, service, etc... and created a page with it (As we learn the basics).
I searched everywhere on how to pass a product or list of products to the custom plugin and render it to the page, does anyone know how to do it? Which steps I should take to be able to do it?

Really appreciate any help

• Sorry if I misspelled something, my English is not perfect.

Honestly, this question is way too general to really be answered. One could quote half of the documentation here. Without knowing specific details or what your problems during implementation may be, I really can only offer the most basic example.

You inject the product repository by referencing it in the service definition of your controller:

<service id="MyPlugin\Controller\MyCustomController">
    <argument type="service" id="sales_channel.product.repository"/>

    <call method="setContainer">
        <argument type="service" id="service_container"/>
    </call>
    <call method="setTwig">
        <argument type="service" id="twig"/>
    </call>
</service>

In the method of your route you use the injected repository to fetch the products and pass it to your template:

class MyCustomController extends StorefrontController
{
    private SalesChannelRepositoryInterface $productRepository;

    public function __construct(
        SalesChannelRepositoryInterface $productRepository
    ) {
        $this->productRepository = $productRepository;
    }

    /**
     * @Route("/custom/route", name="my-plugin.frontend.custom-route", methods={"GET"})
     */
    public function customPage(SalesChannelContext $context): Response
    {
        $criteria = new Criteria();

        // do something with the criteria, add filters etc...

        $products = $this->productRepository->search($criteria, $context);

        return $this->renderStorefront('@MyPlugin/storefront/custom/route/index.html.twig', ['products' => $products]);
    }
}

Then in your template you can iterate the products.

{# storefront/custom/route/index.html.twig #}

{% for product in products %}
    {{ product.name }}
{% endfor %}