Xavi is not an inexperienced manager as he had previously managed Al-Sadd In Qatar's League so yeah it's not like he directly came onto managing a side like Barcelona. However it was first time managing a bit club and in a big league so certainly it was lot of pressure but he did handled well and helped Barcelona win La Liga after 3 years which is massive. Next season, its CL also and they will be defending the title so lot will be expected from Xavi.
Maybe Xavi isn't as brilliant as Nagelsmann. maybe also, Xavi needs higher flying hours. but at least, he was able to bring Barcelona to win 2 trophies at once this season. well, if Xavi wants to defend the title next season and at the same time be able to compete in the European League competition. like it or not, he had to bring in newcomers. especially next season, Busquets will no longer play for Barcelona.
As for some of the players who have not performed well this season, they have to sell at once to remedy the financial problems they are currently facing. In the next season, Xavi must improve the performance of his players. in particular, with the system he employs. I mean, Xavi has to learn to have some other plans if his team is facing difficulties. well, after all Barcelona has now won the La Liga trophy, an achievement that must be appreciated.
In the next few hours, Barcelona will play their match against Real Sociedad. I'm not sure about this match, but if I refer to the predicted line-up that Barcelona will play in this match. apparently, they will play with the full squad. it's just that Gavi won't be played due to card accumulation. instead, Ferran Torres can replace him on the wing. or, Ansu Fati. if that's the scenario, 3 points is the result they must achieve against Real Sociedad.