I won't say that Barcelona's performance was weak. Because Rayo Vallecano is a very strong team. And this team has not lost a match for a long time. So naturally it was a big challenge for Barcelona to get points in this match. Even then , Barcelona managed to score a goal from the penalty spot. After scoring the goal in the 28th minute of the match, Barcelona's target was to end the match 1-0. Barcelona was successful. Barcelona's overall gameplay was stable. Barcelona needed 3 points and they managed to achieve it.
You are correct, Rayo Vallecano is a strong club, and they really performed well against Barcelona, it's just that they didn't get the opportunity to draw the game because they did all there best to share a point against Barcelona, but it's just that the referee has is on the decision he gave in the match, and Barcelona has advantage at home, if not the penalty, I'm sure the game as should end in a draw, because with how the game is, in my opinion, the referee favors Barcelona very well in the game. and that is why they get the chance to achieve three point at home and top the league table. Flick as get the opportunity to top the league table again, in need to try is best to not lose any point with small clubs because if he lose and Madrid top the table, he will be hard to overtake them again, because the league has gone far already and anyone will do is best to continue holding is position in the league table, Barcelona are playing against Las Palmas this weekend and I am sure that will be a winning game for Barcelona because they are not really good to challenge Barcelona in the league competition this season.
Real Madrid is in Spain, so how is it possible for them to leave Spanish League. Which league will they go to. It's not possible because Madrid is a big club and has been existing for long. They're making money and firm through Spanish league. If they leave, what they have taken their time to build for so long will crumble within few months.
Real Madrid can't leave Spain because they're in the country, and they can't move to other leagues competitions, I don't think that will be possible they're just saying it so that FIFA will look into what referee did to them against Osasuna, causing Madrid to draw the game, blowing poor games for them, cheating Madrid and giving Bellingham a red card in the game, making it difficult for Real Madrid to defeat Osasuna. And now they have suspended the referee and he will not get to perform in any competition currently, and Bellingham will miss two laliga games, how Madrid make judgments quickly and take it seriously, any referee will be careful and do what is right when is blowing on the pitch. The competition is going well, and Athletico Madrid, Barcelona, and Real Madrid are all still chasing the league title, and they are all performing admirably. Let us see how he progresses and who will have the opportunity to win the league title this season, Madrid or Barcelona are the clear favourites to win the league.