Luka Doncic has a lot of offensive gifts. But he doesn't have that hunger and aggressiveness that the very best players and leaders tend to have.
I don't want to get into narrative based things but sometimes you have to look like you want it in order to show your teammates how determined you are and how you expect them to get after it.
I'm not saying they're losing because of him. Golden State is the better team, any way you look at it.
But dude...you gotta run back, play better defense, attack the rim with more authority and enthusiasm.