I agree. I can't say I'm a fan of La liga games but I was pretty much interested when the likes of Ronaldo and Neymar were in the league. These were some of the best players on the planet and it got less interesting. You're also right about El Classico games. Now they are just there, like every other regular la liga fixture just a but more hyped but it'd never be anything close to what we experienced when Messi was up against Ronaldo.
Atletico Madrid is the only Spanish team I put my money on since Barcelona and Real Madrid has been shitty since 2019/2020 season till now. Sevilla too is highly unpredictable. Not a consistent team too.