If they had not won the league match after losing against both Barcelona and Milan, very bad days might have begun for Real Madrid. The team needed this win badly. Since they won by scoring 4 goals, it was much more impressive than a normal victory, it was a match that would make them forget the bad days.
They also gave a good message to their rivals that they are still very strong
Real Madrid managed to end a series of bad results with a landslide victory of 4-0 over Osasuna, this victory can raise the confidence of Madrid players to maintain the distance with Barcelona who are currently still at the top of the standings. Despite taking full points at the Santiago Bernabeu, Real Madrid may not be celebrating this result wholeheartedly, because three of their players were injured during the victory, Eder Militao, Rodrygo, and Lucas Vazquez. The injury suffered by Eder Militao is very serious, he must be absent for 9 months, Rodrygo must be absent for at least one month and Lucas Vazquez for three weeks.They also gave a good message to their rivals that they are still very strong
Source: Arancha Rodriguez