Am I correct in understanding that you would like to bind that button to navigate to the dynamic page of the previous item in the collection?
To do this you’ll need to manage the buttons using code. Here’s how to do it.
Start by going to the collection this dynamic page is connected to. You will need to get the key of the field that holds the URL to each record’s dynamic page. The example below from one of my sites is from a collection of albums, with a dynamic page for each album using the collection title field (same as in your case, if I am not mistaken). There will be a greyed out column like the one you see in the screenshot below that hold the URL we need for each record, open that column’s context menu and select ‘Manage Properties’ to see the little menu in the screenshot. Copy the text under ‘Field Key’ and save it aside.
Next, go back to the dynamic page in which you want the previous/next buttons. Clear the bindings for the buttons, and copy the code below to the page.