Neymar will most likely eventually play in the World Cup matches, he will almost certainly be called up, because despite the fact that he hasn't been incisive for years, people acclaim him and want him in the team to go to the World Cup and try to play for the chance to win one for the last time.
Neymar has tried from training to playing in matches recent weeks and he actually tried his best for joining World Cup 2026 by leaving Al Hilal and returning to Brazil, playing for Santos since the last year. He knew that he won't be called for World Cup 2026 if he mostly sit on bench, and with Santos, he has been given many opportunities for playing, that actually helped him improving his fitness, adapt to playing intensity in official matches and increasing his chance to be called by Ancelotti.
I'm not Turkish but I remember pretty well 2002 Turkey's World Cup, it was absolutely impressing. I even remember Rivaldo faking and tricking the referee. Then there was Hakan Sukur's goal against South Korea in the match for the third place which, I think, still nowadays is the quickest goal ever in a World Cup match. And there was Hasan Sas, great player but too crazy

Turkey looks to have very good squad for this World Cup 2026 that is more than 20 years since World Cup 2022. With Yildiz, Guler, Celik and some other good players, they will have a very competitive squad in World Cup 2026. It's not easy to go far to semi final and get a third position like in World Cup 2022 but this national team will potentially have a good World Cup. Additionally with this quality player generation, they will likely have some good tournaments in next World Cup and Euro in coming years.