Right Barcelona being one point ahead this early means almost nothing to great team like Madrid. We should not worry about league table but about how team plays. Their last two games tell powerful story. 5-2 loss to Atlético Madrid was huge shock and very rare bad result for Madrid. It showed real weakness in their strategy or defense that day. Losing with such large difference definitely hurts  team confidence.
But strong 5-0 win over Kairat in Champions League shows that their team spirit and attack are still extremely good especially with Mbappé scoring three goals. This victory suggests loss to Atlético was just one off mistake and Coach Xabi Alonso team immediately proved they can still play great attacking football you talked about. If Madrid keeps playing with that high level of energy and teamwork that small one point gap in league will quickly close. Kairat game was best way for them to get their confidence back and show their rivals how strong they still are.