Bale and Hazard are talented players. Real Madrid made no mistake in bringing them to the team. If their fitness problems could be fixed then we would get proof of their ability. Neymar also has a lot of fitness problems. PSG paid him a lot of high salaries, but Neymar could not play for almost half the season due to injury.
I don't understand a little bit that some good players who come to Madrid suffer a lot of injuries. If he is not injured then he can not perform well. I don't think it was a technical error or the coach's fault. For Bale actually he is not bad he was good a few years ago, for Hazard it seems he is too fat.
If you look at his performances at EURO he is not bad, Anceloti deserves to keep him in the right position and give him the confidence to play regularly.