Could be fake tho.
I think his last great period is 2021/22 when Xavi took over. He was absolute best defender in Laliga at that time. When he was injured, the defense collapsed.Whether you love him or hate him, make no mistake, whatever he puts his mind to he is a success at. His tennis venture, his Kings League.
In regards to football, he lost love for the game pretty early on, said so himself many times, could only really motivate himself for the Classicos where he was at his best.
Even with his low motivation, he was class up to 2018/19, which was his final great season. You have to remember he was playing with Lenglet/Umtiti, Roberto, and Alba. A defence that basically couldn't defend.
His body couldn't compensate for his low motivation after that and the final few years he spoiled his legacy somewhat.
But, as with Alba, he was a far far better player than Barca fans would like to give him credit for.