I also think the referee was quite willing to help Real Madrid today to win the title, even he wasn't willing to review the VAR just to see if his decision was correct.
No, this is just an excuse, mate.
That was a clear foul and the ref made the correct call, so in this case VAR wasn't necessary. VAR mostly comes in if the call is controversial and the Video Assistant referees think the match official might have a second opinion after looking at the video from different angles.
Anyone who complains will only get a card, so this is a bit annoying.
The Barça official who got red carded used foul language. The commentators confirmed this.