Alonso is not serious because when a new coach is assigned then the job is to do better than the formal coach and since Alonso became the coach there have not been any improvement and even mbappe is not doing well there need to be a lot of things to be figured. And there game against Osasuna actually did not make people trust Madrid because there Madrid is not given us that satisfaction and it got to a point were Madrid will try to score when they are playing and maybe because we expected to much from even Alonso and there are also new coaches that am sure will do better than him if given the opportunity.
In Madrid's situation, I think the coach alone is not to blame. I get it, he's the coach, it's his responsibility to determine how the team plays and win games, but its not always that straight forward.
Madrid struggle to create chances, this is their main problem form the Osasuna game. They did everything well, but couldn't create chances and as well as the coach is to blame for the this, the players should also be blamed. The midfield couldn't create chances, the winger couldn't create chances. these are the two departments responsible for creating chances and when they fail the team struggles.
Most of Madrid chances in that game cam from long range shots.
Guler, Vinicius, Valverde and Diaz needed to do better I terms of crestig chances.