Real Madrid and Barcelona have dominated La Liga for decades and have always been on even terms. This is why El Classico is one of the best rivalry matches in history, especially during the Messi-Ronaldo era. Actually, I really regret the situation that is happening at Barcelona because they are facing a financial crisis and this will reduce the rivalry between the two. Yes, Barcelona became champions in the previous two seasons and Real Madrid became champions last season. But for this season Real Madrid have signed a contract with Mbappe who will be their icon and I don't see barcelona doing the same. Yamal is a wonderkid but it seems like the two are in different positions and I haven't seen any rivalry between the two.
For this reason, I really hope that Barcelona will soon rise from its downturn so that El Clasico will be even more interesting. The rivalry between the two makes the competition for the La Liga trophy even more competitive. Last year Real Madrid managed to dominate Barcelona in El Clasico and also in the title race, this is very natural because Barcelona condition is unstable. Barcelona is still trying to make improvements to its squad in order to improve its quality so that it can compete again with Real Madrid. Mbappe arrival to Real Madrid should increase Barcelona's motivation in building its strength to return to the championship ladder.
Barcelona experienced a downturn in their current financial sector and made the competition in La Liga no longer as fierce as before, the rivalry that occurred between Barcelona and Madrid may still be ongoing today but we no longer see any intensity that occurs in the competition between the two clubs, the El Classico match is a benchmark for us in assessing the magnitude of the gap that occurs between Barcelona and Madrid today, previously, we could see how Barcelona and Madrid took turns to win the match and give us the impression of a very tight competition, but in recent seasons Madrid has dominated the victories and matches of El Classico and in fact it makes us see that El Classico is currently very boring.
What you say is true, Barcelona are currently starting to try to improve the quality of their squad, but with limited finances at the moment we can't expect too much from their resurgence next season, the arrival of Hansi Flick will be a new era for Barcelona but still it does not guarantee that Barcelona can be better next season.