How can I hide "Watch on Youtube" and the bar above the Video

You can check out these options (not the full list) that the offical YouTube player supports:

- modestbranding [0|1] – Prevent the YouTube logo from displaying in the control bar
- showinfo [0|1] – Display thumbnail images for the videos in the playlist
- autohide [0|1|2] – Hide the video controls automatically after a video begins playing
- autoplay [0|1] – The initial video will autoplay when the player loads
- disablekb [0|1] – Disable the player keyboard controls
- controls [0|1|2] – Display the video player controls
- theme [dark|light] – Dark or light control bar
- color [red|white] – The color in the video progress bar
- fs [0|1] – Display the fullscreen button
- rel [0|1] – Show related videos when playback of the initial video ends

You could try to play with these options.

This for example hides everything:

[youlist pid="PL3FF15AA7ED356D9F" showinfo="0" controls="0" autohide="2" modestbranding="0" autoplay="0" disablekb="0" theme="dark" color="red" fs="0" rel="0"]