Yes you are right about that but i think christiano ronaldo is an important person on real madrid, it's like he can to be a leader on real madrid and also can support their teammate on real madrid. Let's see what can Zidane do on the next matches without ronaldo, if he still can't figure it out, it will be a big problem.
football should be not an individual play but admitted or not sometimes there are the teams who too rely on the particular players such as Messi to Barcelona and Ronaldo to Real Madrid and if they're not played because got injury or suspension then the teams itself cannot playing well and usually they will lost and i think this is the cause for now why Real madrid still cannot showing the best performance yet because they still cannot figure out the players who equally to Ronaldo skill
Over reliance on a single players tends to be bad for every time. Look at when the MSN was at it's prime though Messi was the superior player, one can say that the team wasn't over dependent on him, there were times that Messi didn't play exceptionally well but the likes of Neymar and Suarez played their parts wonderfully and it all goes well for everyone. But with a one man team when the star player is stopped, the whole team crumbles. With the BBC we all know that only Cristiano Ronaldo has been playing well for some time now.