How can I selectively display brand collections on a single page?

I want to create a brand collection. Each collection page has its own collection image, which becomes the brand logo.

All fine and well when I create a separate collection page for each brand with the brand logo as the collection image. However, when I add the whole collection to the main menu so all the logos line up properly on one page, I also get all other unrelated collections added as well that I don’t want on that specific collection page.

How do I deselect the unrelated collections and only keep the ones I want with the logo displayed?

I’ve tried other ways but end with new issues. For example, if I create a collection only for the brand products, there is only one logo and I can’t separate the collections with specific logos. If I create a ‘Collection’ menu item and add each collection individually it doesn’t show the logos spread on one page.

Also, another problem I have is that none of the collections shows the text description I’ve made for each brand. When you select that collection it only shows all the products but it doesn’t show the description or video I have added.

(I’m using the Shopify Studio theme)

I found one way to work around this on YouTube. I’m sharing the link below in case other shop owners run into similar problems:

https://www.youtube.com/watch?v=91dbxKlVhaI

The only issue with this is that you can only add up to 15 collections to the page… If you create a second collection list the page has an ugly space in the middle of the collections.