That's my expectations on him too, Xabi must have spent a season or two at Madrid before anyone would start to question or judge his credibility and ability to be coaching Real Madrid, Alonso is still an upcoming coach in the managerial job and can't even be compared with Ancelotti's experience with managing a football club. I believe with time, Alonso will replicate his achievements in Bayer Leverkusen at Madrid but not something that will happen immediately as many were so desperate to have seen him win PSG and the club world cup.
Their defeat against PSG has left many doubting Xabi Alonso's abilities, and they're also unaware that PSG themselves suffered a similar fate at the hands of Chelsea. For me, this isn't a worrying thing because in football, anything can happen beyond expectations, and while it's true that Xabi Alonso hasn't fully adapted to make Real Madrid stronger than before it's not surprising.
Ancelotti has been a coach for so long and has successfully delivered titles to the teams he's managed. Comparing Xabi Alonso to him is unfair, as Xabi Alonso is just starting to build his coaching career. It will take time for him to make Real Madrid stronger and I don't think it will be achieved in a short time as many people wish.
yes you are right, Real Madrid not winning PSG is not something we should bother ourselves so much about, Chelsea winning PSG those not mean Chelsea is more inform than real Madrid, Chelsea can play real Madrid now and they may lose to real Madrid, that match between Chelsea and PSG is a final match for the FIFA club world cup so every team in final always try as much as possible to play there best and there's always a different spirit inside the players in a final match, Xabi Alonso not being able to defeat PSG those not mean his not good in coaching, we have seen how he coached Bayern Leverkusen and they lift there league trophy, Xabi Alonso is a very good coach he just needs more time in real Madrid and he will make the team stronger.
Yeah we can't compare Ancelotti to Xabi Alonso, just like you said Ancelotti has been coaching for so long and I think Xabi Alonso was still playing in Liverpool when Ancelotti was already coaching so Ancelotti had gathered more experience than Xabi Alonso, so is not good for us to compare them.
However what I believe is that Xabi Alonso will make real Madrid strong again is just a matter of time.