In order to embed a video, you must go to youtube and search up the video you'd like to embed

After, click the chosen video and press and then, you will see the "embed" button on the bottom next to the "copy" bottom in the corner.

When you click "embed" a window will pop up:

And when you scoll, you'll see multiple options you may change to your likings

Once you have changed the options to the way you would like your video to display, copy the multiple commands and paste it where you'd like in order for it to play.