@YouTube can you pls make it so that “new” videos are defined by whether or not I’ve watched the videos? Too often I’m excited about a “new” video that turns out to be old to me. This seems like a very simple fix that wld make my life exponentially less frustrating. 
#youtube
You should be able to see a red bar on the video which you already watched from the creator which differentiates the new videos from the old. Let us know if you see otherwise.