I completely agree with this.
The teams that were the most disappointing in the last major world and European competitions, such as France, Brazil or Germany, have great individual players but lack team spirit and unity.
It is not enough to gather great individuals and expect that the national team will only win and win trophies by inertia.
At the last EURO, when France lost sensationally, it seems to me to Switzerland, and dropped out of the competition early, it was said that the relations between the players in the French team were very bad.
At the world championship in Qatar, they had a serious problem because of Benzema, who the key players of the team did not want, and this reflected on the team's spirit. It is difficult to say whether they would have become world cus again with Benzema, but the damage has certainly been done.
Just watch these two teams play (Argentina and France), and it is very evident. I have never noticed anyone in Argentine squad playing selfishly. They readily pass the ball, depending on the situation and circumstances. But with France, I have noticed several times that their players waste golden opportunities to score, just because they don't want to pass the ball and try to score the goal by themselves. France maybe having some of the best players in the world. But nothing can be done if the players don't trust each other.