I am not the fans of both teams but i have to disagree with your opinion because Barcelona and Real Madrid is the best teams in Laliga and probably if we see from financial condition Barcelona cannot compete for Real Madrid because they still hard struggling to balanced their condition but if we see from the performance for every season in Laliga so far only Barcelona is the strongest rival for Real Madrid even Barcelona can broke the domination of Real Madrid on 2022 because at that time under Xavi Barcelona can gets Laliga trophy
And from the squad too the quality between Real Madrid players and Barcelona players is not so different because although if we see from star players Barcelona bit below to Real Madrid but currently Barcelona was filled to several talented young players such as Lamine Yamal or Fermín López and these players is Barcelona future so for next season i think Barcelona still can considered as strong rival for Real Madrid and they can compete with Real Madrid for race title
Unlike Real Madrid who always be buy star players but Barcelona is different because through an their academy La Masia Barcelona was so often to created star players and for sure they didn't spend a lot of money to do that and next season Barcelona is under new manager Hansi Flick and every Barcelona fans are waiting whether Hansi Flick can able to make Barcelona to performing well again or not but i personally very confident Hansi Flick can makes Barcelona playing more entertaining and better
Altetico used to be part of the rivals but they dropped drastically all of a sudden don't know why actually, they can't just keep up.
When it comes to squad Realmadrid might be leading but I don't think Barcelona is an exception, last year was an Injury season for Barca .... Gabi, Pedri, Frankie .... mieldfielders play a vital role and once they are missing, it shows drastically.
Barca can still compete with their squad they are only down in their financial status but not in squad although not upto Realmadrids' but let's see what will be the outcome for next season.
The Aim of Xavi was to build Lamasia players into the team, so sad he couldn't finish that I hope Flick does better though.