Long answer: there ist only one template in Shopify for “all collections” page. Most themes then predefine the filters, so you see only the products in the collection clicked.
If you want a new page for each collection you will need to duplicate the collection liquid file template for each collection You want to have on a new page, then it can be a different template for that collection. So you can even display the collection specific informations there.
It sounds like you have setup collections using “anchor links” that just redirect to collection lists made on the same page.
Instead, you want to create collections in your store admin and redirect those images to the individual collection pages.
To confirm if I am understanding your issue, I would love to be able to check out the website and how you have this setup currently. Once I confirm the current setup, I can provide instructions on how to find the collection URLs and hopefully help you make those changes to the images you are using.