Wix Blocks Dashboard Page CMS Collection Single Item

Question:
Hi I’m new to Wix development (just started Yesterday), trying to create a solution to a problem we have on a new site we just had a freelancer create for us. Using wix blocks (and playing with some velo code), I’ve implemented a few Dashboard pages for using a repeater to show collection data, and linking to a page to add a new item to those collections. I’ve tested this and these seem to work fine. (In a REST implementation, I’ve created an INDEX Page and a CREATE page)
Now I’m trying to figure out how to create a SHOW page for a single collection item. This is turning out to be significantly more difficult than it should be. The item has a lot more data than fits on a single table row, so I want on the index page to click a button and go to a page that shows the details of that item. My questions is How do I wix which Item to load? When I place a single Paragraph or Text box and connect it to the collection dataset, It seems to load the “first” one in the set by default – Loads up to 100 and simply uses the first one to display the data of the field I select. That’s Exactly what I want, But for the collection Item of the button I press, Not a random “first” collection item.
I’ve seen a lot of things about “Dynamic pages”, But I’ve not seen a single mention of them in any of the editor options, and all tutorials I see are different from my view.
I found out using Velo code how to dynamically set the button of the repeater item with the Item _id, and set the onclick function using the wixDashboard.navigate function to go to the dashboard id of the SHOW page adding a relativeURL of “?item_id=”, and it looks like I can get the URL data from the SHOW page.
So now that I have the Item_Id for the item I want to get, How do I tell to load THAT collection item to use for the dynamic data? The Filter seems to only have a hard-coded value, which isn’t useful. Is it possible to just tell wix which Item to load? If not, Then the connections I’ve done so far through the blocks is useless, and in that case the implementation would have to be done entirely in Code. That’s no problem, But I think it’d be magnitudes of times more efficient and more simple to be able to load the correct collection item from the start and have the rest of the connections and setup as is without needing to be changed.

Product:
Wix Studio, Wix Blocks, Dashboard Pages.

What are you trying to achieve:
Load a Single Collection Item for a Dashboard Page.

What have you already tried:
Scoured Forums, Documentation, Tried to check all of the Blocks connection sidebar items, options, and velo code.

Additional information:
I don’t think additional information is required.