But that isn't the intended use case for YT? How are you expecting to watch a professionally produced TV show on YT for free? YT offers a catalogue of tv shows and films that you can purchase and watch on the site but I'm confused why you think you'd be able to search for a tv show and be presented with every episode nicely catalogued in order?
YT has always been focused on user generated content - however in recent years you will have noticed this shift toward more professional style videos from larger channels who can afford to employ a proper team