But why did Son Heung-min return to Korea separately?

‌I mean, shouldn't the captain return with the rest of the team?
The younger players got criticized heavily when the delegation returned after being eliminated,
but the captain comes back separately and gets a warm welcome.
And if you ask whether the captain performed well in the finals, he didn't even do that well.
Son fans keep chanting "Captain, Captain," but I really don't understand why he returned separately.