Ok, here’s a quick tutorial on how to properly embed YouTube videos since I have been seeing a lot of incorrectly done ones lately
1.) find your vid on youtube
2.)copy the url at the top of the screen
3.) paste here, it should look like this.
4.) finally remove the https:// from the url and the video will show up, like this
www.youtube.com/watch?v=lXFSvPhw71g
Good luck ;D