How do I get the repeater to automatically sort

How can I make the CMS repeater show only the owner’s products?

Earlier I already asked and got it to work so that website users can post used products on the website and profile links and everything to work, but now a new idea or a problem came up.

Problem: If the same owner has several products, what code can I use to show the repeater only the products of that owner that are other products of the same owner.
And so the repeater is there at the bottom of the product page, from where it would be easy to switch to other products of the same owner

Edit: and so I have the ownerID and others ready on the page, but now I’m thinking about what kind of code I should write to get the repeater to automatically retrieve what is on the page using the ownerID.

From the link to previous problems and otherwise to find out what I’m doing (A beginner needs help creating a dynamic page owner profile link - #6 by Nieminen)