I believe those Croatian players will surely be disappointed in themselves, there is nothing bad to lose to a good team like Argentina, but to lose 3-0 in a world cup semifinal is embarrassing
I don't think it's embrassing because Croatia kept playing good only this time their defense forgot about Messi's agility and let him in the box so they could provide the assist for the third goal. Brazil is the country that knows best what it is to be humiliated, first as the host and secondly being defeated with a very landslide score of 7-1.
I think Croatia is still good because it is rare for a national team that can reach the final in the previous World Cup to reach a round that is no less prestigious that is semifinals.