Yes Madrid dominated match but they could not create good goal chances. Without penalty they would face even more frustrating goalless draw as you said. This demonstrates typical difficulty at best teams to crack defensive opponent. You are also correct that single game does not give whole picture and therefore because of that true test for Real Madrid will be to determine whether or not they will be able to exhibit greater ability to create scoring opportunities in their future matches to convert their domination into goals.
Don't worry what Madrid experienced at the beginning of this season even though he only won narrowly but remember this was the beginning of the season not the end of the season. This is a normal thing and I often see in every season when a popular team suffered bad luck at the beginning of the season. New players who have just been recruited also need adaptation to work solidly with old players and unite the ministry. We must believe that Madrid has always been a very experienced team to have a star player who can be relied upon to compete in La Liga even though only the most important thin victory of 3 points.
Yes, you are right. It was Madrid's first match but they did not play as expected. Although it was the first match but, no one expected such a game at home. We all believe that Real Madrid has no shortage of star players and they will play great in the end. And yes, Real Madrid often gives a special opportunity to newcomers on the field with experienced players. In such situations, newcomers also gain experience. So, we believe that Madrid is an experienced team. They do not repeat the same mistakes over and over again. We will definitely see their real game when the time comes.
After a few matches, once the team finds internal harmony, I think Real Madrid can achieve the performance we expect. Their statistics were very good in the first leg, but they struggled to score. I think they should rely on Gonzalo Garcia to score goals. He has natural talent, and I liken him to legendary striker Raul. He could be Real Madrid's biggest asset this year. Provided they give him enough opportunities, they can create a better performance with their young players this year. I believe they will achieve this with the help of the manager.