Bale and Hazard are Perez's faulty passes. Tottenham and Chelsea worked hard to sell these players. You shouldn't expect them to be stable and good games. Peres should try to sell them and buy younger and more promising players.
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.