#3 Internal politics between players and managers
Argentina is consistently hampered with infighting among squad members and also between players and the manager. Sergio Aguero, one of the pre-eminent striker in World football, had a very public falling out with manager Jorge Sampaoli after their 3-0 defeat at the hands of Croatia during the 2018 World Cup.
Tension rose to such an extent that it was reported that it was a player revolt that lead to Sampaoli's sacking after the tournament. Again, the internal strife the squad constantly faces is another sign that shows the Albiceleste lacks a real leader in their midst. This would never have happened under a Javier Zanetti or a Diego Simeone.
Apart from the player-management tensions, there are tensions caused due to personal issues within the squad as well. Mauro Icardi, one of the most devastating strikers in world football and someone who would have walked into any other national side, has been reportedly kept out of the national set-up owing to Messi's grudge against him since he had an affair with (and later married) his friend and former Argentina international Maxi Lopez's wife.