You can explain better you try to do !!!
For me is more easy created a youtube video list with button, when user press button get the ID from the list and:
Set the ID for youtube player (use Youtube Player Instandload
Hide the list
Show youtube player
When user back stop the video:
Hide youtube player
Show the list
Take a look at my post
Created dynamically Card View with button (to show youtube thumbnail) and label with YT description.