Lost how? Did you try anything I described in my reply? If what I wrote makes no sense at all, I would be remiss if I did not suggest that you should take a big step back and work through the tutorials and watch some introductory videos. Without having a good understanding of the basics of Bubble, you are really going to struggle with what is a pretty steep learning curve.
The above being said, double-click on the match_details page. In the properties editor for the page, set the Type of content to
select_all_matches. Next, add a workflow to the button in the repeating group on the match_page page. In the workflow, select the Go to page… action, select the match_details page as the Destination, and in the Data to send field, select
Current cell's select_all_matches. At that point, you will have access on the match_details page to the data of the thing in the row associated with the button that was clicked.