Video On Ecommerce

I am trying to add a “How To” vieo to a product page. I went to you tube and got the code and paste it into the first description box under text. Update it then the proper video appears in the visual. When I preview it a “watch video” button appears after the description but it only links to the you tube channel not the individual video. I have used the share link I have uses the share code and the Embed code provided from youtube as well as a right click copy on the video not logged into our channel. Once again the proper video is showing on the back end but not live. Sorry if this needs to be bumped or whatever I saw a few posts but most were not working none I saw said directs to channel not video..

Thanx in advance.