Unfortunately the suggested video functionality is controlled by YouTube.... however there is a workaround that you can easily use...
If the URL contains a '?' character, then you will need to add this to the end of the URL &rel=0
So for example the URL from the address bar in a browser:
If the URL doesn't contain a '?' you'll need to add the question mark as as well. ?rel=0
So this URL:
Still have a question? Let us know.