When an embedded YouTube video is done playing, the YouTube player normally shows several related videos, also known as “suggested videos” or “more videos”. However, there are reasons a website owner might want to hide these – due to branding preferences or simply wanting a cleaner user experience.

Disable related videos on YouTube embeds by simply adding ?rel=0 to the iframe’s src like this:

And also you have to use embed keyword in url when you have url with watch keyword like this https://www.youtube.com/watch?v=EngW7tLk6R8, you have to use embed keyowrd instead of watch keyword so the rel=0 will worked and more videos will be hide. So your video url will be made like this https://www.youtube.com/embed/EngW7tLk6R8?rel=0.