Too many wrong decisions IMO
1/ Wasting too much of the preparation time trying out players rather than developing strong team relationships, particularly in important positions (ie right back/ right winger etc). We lacked cohesion throughout the tournament and the reason is pretty obvious
2/ Too many wrong choices in the squad: Why was Mainoo even there? Why was Wharton ignored? How useful would the dynamism and pace of Gibbs-White have been second half last night and in other games? You don't waste a squad place on a player picked to take penalties or to throw on in desperation in injury time!
3/ Persisting too long with players who were clearly not fit - Saka, Rice, James etc. This obviously relates to squad choice
4/ And then there is last night!! The Konsa/Gordon sub was a disaster: we lost our paciest player, massively reducing our threat on the break, and the players' natural tendency in such situations to drop deep was strongly reinforced. We then went to six defenders, one midfielder (a defensive one) and three (very tired) attackers!! Argentina faced no threat at all and it was completely obvious they would score at least an equaliser!
It is easy to blame players but, as was clear in the Mexico game particularly, I think they gave just about everything they were able to give.
Overall, they have been ill-served by their coach and his team, and I would get rid.