Ronaldo case is somewhat different from that of modric, Ronaldo was actually after perfection, to proof people wrong since they've been doing some bantering and calling him some sort of names(definitelymessi fans)... Losing a penalty doesn't have anything to do with experience, Messi have also lose penalties....no one is above mistakes and I'm sure that's not his first but in his current stage he's actually feeling overwhelmed by the social media bully and sure the mistake did cost him alot

Coming back to modric, I still feel he makes some great impact in big games as an experience player IMO
Real Madrid have great players in the past years and the current one. The president of the club, Florentino Pérez have done his best to ensure things work fined for the club. He made best signings for the club, Cristiano Ronaldo and Luka Modric are two different players in the same club, they've played together for years and totally contributed in every season for the club. However Ronaldo exited Santiago Bernabéu because he was tasty to pick more challenges for himself which he quite made the long ranging accomplishment.