In football one can never do without the team mate. If only just one player is carrying the load of a team, it will be very difficult for the team to win.
For instance Messi had been the only player carrying the load for Argentina since he joined the national team, but this time around Argentina had to wake up and take some load off Messi's head.
So Neymar could have done nothing alone without his teammates putting much effort in the match. But I know he'll win Copa America someday.