Actually saying whether he is capable or not in these 2 seasons has been the answer on how he can make Barcelona improve and improve himself has been Xavi's answer even though he did have a few failures such as in the Champions League.
Now it's just a matter of how he changes himself for the better because there is still some work he has to do to make Barcelona better this season, especially with conditions where they have to try to be more consistent in a better competition, in this case the Champions League, because if they fail again then this will reap a lot of criticism that is after the previous 2 seasons they failed.
For La Liga positions everything will still be the same with the same rivals as Madrid and Atletico and indeed that will not change because the competition in La Liga for the championship position only revolves around these 3 clubs it seems.
It even sounds sad that there are only three clubs competing on a permanent basis... I think in a season already completed Barcelona had the goal of taking the La Liga title, it's as if they weren't ready for something else. There is a sense that they are going step by step, raising the bar and regaining their former strength and glory. So, in the new season, it is certain that Barcelona will perform well in the Champions League
Regardless of whether it's sad or not, this is a fact where other clubs in La Liga find it difficult to make their condition stable both financially and in performance.
Sevilla is a new hope where previous seasons have always been troublesome but this season they are also very chaotic even though the Europa League trophy can be obtained.
On the other hand, other dark horse clubs such as Villarreal, Soiceadad and Betis were also unable to provide more breakthroughs so that only Madrid and Barcelona were the last choice to fight for the La Liga trophy.
But of course it is slightly better when compared to Ligue 1 and the Bundesliga.
Actually saying whether he is capable or not in these 2 seasons has been the answer on how he can make Barcelona improve and improve himself has been Xavi's answer even though he did have a few failures such as in the Champions League.
Now it's just a matter of how he changes himself for the better because there is still some work he has to do to make Barcelona better this season, especially with conditions where they have to try to be more consistent in a better competition, in this case the Champions League, because if they fail again then this will reap a lot of criticism that is after the previous 2 seasons they failed.
For La Liga positions everything will still be the same with the same rivals as Madrid and Atletico and indeed that will not change because the competition in La Liga for the championship position only revolves around these 3 clubs it seems.
A lot of people are actually getting impatient with Xavi. But I believe he is actually going to bring good results for Barcelona even in the future and he will also be able to perform well with Barcelona in the Champions League if he is given the time and money. We all know that he’s not going to get a good amount of money because Barcelona cannot afford it right now. But with time I think he will be able to bring in better results. At least far better compared to what the previous coaches of Barcelona were able to bring.
I mean he has already proved that he is better by improving Barcelona and also becoming the La Liga champions. I am guessing that the next target is going to be the Champions League title. But I don’t know how realistic that target is going to be.
Time is sure they can give but for honest money it's a bit hard

But even so, with the current conditions, they should be able to get a trophy in La Liga and with Xavi losing 2 times in the Champions League group phase, of course, it must make him hot because as you said, the disappointment of failing in the Champions League will obviously still continue to be felt even though the La trophy The league got there and Xavi has to try to fix that.