I think in order to be really good in La Liga you have to be a direct player, a player who can go straight forward and really be able to score. This is why Bale, Ronaldo, etc were able to have success.

Players like Fabregas, Coutinho, Isco, Malcolm, and we are seeing it with hazard, are simply not allowed to stay on the ball because of the low blocks that most teams play. So instant double teams come in and keep everything in the box narrow. You will not be able to wait to do take-ons, and you will not be left alone 1v1 on an island.

Ronaldo at MU was an insane dribbler, but when he went to La Liga ,he became a very intense direct player. In his prime, Ronaldo was just ridiculously skilled, where he could adjust his game to any coach, any system, or any league. Look at him now playing more as a striker, and still being very effective in the twilight stage of his career.

Fabregas at Arsenal was a football genius, but then he went to Barcelona and his game faded. He returned to the EPL and was even more magical than his previous stint. He was a very important piece in Chelsea, winning 2 epl titles within 3 years.

Basically, you have to be a direct scorer in La Liga . Messi uses his dribbling ability to go straight for goal, or he does direct 1-2s ,and cuts through small openings and goes directly for goal.

In order for Hazard to really excel, he will have to be more of a scorer, as oppose to trying to dribble and swivel against low block defenses and double teams. He will have to get the ball and move directly to strike, but that is clearly not in his game.

Plus this Real Madrid team is lifeless.