Both teams played impressively, but I have to say that Rayo Vallecano gave Barcelona a tough match because they outperformed them, which I didn't expect it to be so challenging for Barcelona. The match ended 1-1, showing the competitive spirit of both teams. Raphinha and Dani Olmo had a tough game today, with Raphinha performance being particularly disappointing due to some selfish decision making. If he had played better, Barcelona might have scored early and possibly exposed Rayo Vallecano's weaknesses. But that's football you can't win in every game. Christensen contributed to Barcelona strong defense, and Joan Garcia made excellent saves that prevented barcelona from conceding.
The performance of Rayo Vallecano was surprising, I didn't expect them to give Barcelona a really tough time today which make them to take one point to themselves, I agree with you if it was not of the help of Christensen in that defense and also the help of Joan Garcia in the post Barcelona could have concede more than the single goal scored by Rayo Vallecano, if Barcelona cannot stop their highline defense I think it will affect them both in the defending the LA Liga title and also competing for the UEFA Champions league because they will be facing bigger teams, I think Raphinha was outclassed today by Luis Felipe which make him do some wrong decisions (as you said) and affect the game today.