Real Madrid are no longer on the phase with Barcelona, alot have changed and watching them suffering in all angles. Hansi Flick is appointed as the new headcoach of Barcelona and we should prepare for the new management of the new coach. Barcelona have been going through alot lately with their static poor performance in La Liga and other major tournaments. The Blaugrana needs to rise back to their heels if and the only way to do that is simply making pushing efforts for improvement and signing new players.
I'm not really sure with the point of your statement. Sure, Real Madrid looks stronger than Barcelona. However, I can't agree that Real Madrid is on another level compared to Barcelona. Even if Real Madrid could win against Barcelona in the last few El Clasico matches, it was never easy matches for Real Madrid. Barcelona still has good players in their squad although they are no longer as strong as Barcelona squad in the past.
Barcelona has made some efforts to change the situation. They changed the coach, they sold La Liga TV rights, and they sold some players. However, it is not enough to deal with the financial problems. I think Barcelona needs to change the owner, it is like Man City ever did in the past. A new owner from Saudi may have huge funds to fix Barcelona problem on financial strength.