You don't expect a team like Madrid to exit the tournament at this stage of the competition apart from PSG that I see that will pose as a threat I don't see any other team that can stand towards to tow with Madrid because their team is one of the best teams in the world
Madrid are not yet strong enough, because they won against Juventus isn't enough reason to consider them best after PSG. If it was Madrid against Bayern in quarter final of World Cup tournament, Bayern would be more seen as the favorite over Madrid.
In the tournament, Madrid are making progress but more work needs to be considered by the manager and players, Madrid performance is very average for the team, they won against Juventus by 1-0 but Manchester City defeated same team by 5-2, it's not summing up that Madrid are prepared already for next season.
Real Madrid did not play good football at all against Juventus and they won with great difficulty. At first I found Real Madrid's game to be completely random and Juventus had several chances in the beginning that I can't figure out how they missed. From what I saw, they had two free kicks on the goalpost but they couldn't put the ball in the goalpost, which was their failure. If Juventus could have used those chances and scored multiple goals in the Real Madrid net early on, Real Madrid would never have won this match. Real Madrid understands at the end of every match that their team has weaknesses and that they cannot progress very far with such weaknesses, but at the moment they have no alternative, so they are going out on the field with their weaknesses and trying to do better.