I don't believe Madrid did all they could in the transfer window. They have a lot of loopholes in their squad. Let's not get carried away by the early victories. They need wingers, they need a striker.
Madrid has scored 6 goals this season, 4 have been by Bellingham who is a midfielder. As much as that is good news for Bellingham, it should be worrying for Madrid. What are their attackers doing? Sooner or later Bellingham won't be able to score as much as he's scoring now, what would happen then?
Drama 7 goals is really interesting to watch

I enjoyed this match because it was one of the most watchable matches of the week.
Barcelona still have problems in their defence especially when they get counter-attacked as the players fail to get back but what I like is that their goal productivity is also back. After 2 weeks of poor finishing in this match they seemed to be back to the Barcelona that always scores a lot of goals but there are still some things that need to be fixed by Xavi.
Lewandoski might be a problem for Barcelona if he doesn't pick up his form. He needs to start scoring the chances he gets. Barcelona creates a lot of chances and with an in-form clinical striker, Barcelona should have been at least 3 goals up before Villarreal got there first.
I guess they have to manage till January when Vito Roque arrives or Ferran Torres is going to step up
Realmadrid had to get a replacement for Courtois when he got injured and might be forced to get another player on loan since Vinicius Jnr injury seems serious and could last for a long term, despite Ancelotti making a statement previously that there would be no new signings info the club, I think they'll have to retrace that statement and sign one more player, since the transfer window is still open for some few days, they can't keep relying on Jude Bellingham because they'll need more backup and he could get injured on the long run making the team left out with no reliable goal scorer since he's the current goal getter of the team.
As for Lewandowski he's been so unimpressive since he arrived Barcelona, I expected him to come to the team with the form he had at Bayern Munich but I've not been impressed so far because he's not regularly getting the goals and that could be a problem for Barcelona this season, if his form drops more when the tournament gets tougher they could be forced to loan him out to another club.