Sometimes the best thing that can happen to a player is to get rejected by a big club, go through the French second division, move to PSV and join a top league at a mature age. I do not know his struggles, but he really seems to be that kid who was treated like star from day one. We saw it at Chelsea. The talent was there, but the pressure, the criticism, how does he handle it? Only he knows but from the outside looking in it almost seemed like he took offense, rather then let it drive him.
Now compare him with Werner. Werner is what he is, but the bloke has a top top mentality. He really does not care how many memes people make, how bad his misses are, he just keeps going 100%. Morata with Werners mindset would be lethal.