England faces significant tactical challenges as they prepare to face Mexico, with coach Thomas Tuchel needing to implement key changes to overcome both environmental factors and on-field struggles. The team's progression to the last 16 of the World Cup has been marked by a stuttering start, drawing criticism from supporters and raising questions about the team's identity and style.

One of the primary concerns is the team's lack of cohesion, particularly in attacking wide areas. Noni Madueke has repeatedly found himself isolated, with a lack of support from the full-backs. This issue is compounded by uncertainty at right-back, where Tuchel has utilized four different players. Trevoh Chalobah, initially brought in as cover, has not yet featured, while Jarell Quansah has served as a backup. Declan Rice has also been deployed in the role late in matches, a move that may continue if Reece James' hamstring injury persists.

Djed Spence, who was harangued by Tuchel during the match against DR Congo, appears to have lost the manager's patience. His performance, along with that of Elliot Anderson, has been questioned, with both midfielders often positioned too far from the play. The team's system, rather than personnel, may be the root cause of their midfield struggles, as they have been repeatedly carved through by opponents. Pulling Rice out of this midfield configuration could offer a potential benefit.

The central defensive pairing of Ezri Konsa and Marc Guehi has also shown a lack of understanding, as evidenced by their collective bewilderment when Yoane Wissa nearly scored against them. Similar questions linger about the impact of the left wing position and the goalkeeper's erratic performances.

Despite the team's apparent willingness to fight for each other, as noted by Anthony Gordon, the on-field execution has fallen short of Tuchel's stated ideals. The team has not been hunting in packs or attacking in units, leading to criticism for overhit passes and poor control. England's supporters voiced their displeasure on multiple occasions during recent matches.

As England prepares to travel to Mexico City, they will face the significant challenge of acclimatizing to the high altitude at the Estadio Azteca, where oxygen levels are 20 percent lower than at sea level. However, the more immediate challenge for Tuchel is to foster better understanding and tactical fluidity within the squad. The team has relied on individual moments of brilliance, a reliance that was meant to be a hallmark of this tournament campaign, but one that has proven insufficient thus far. England is described as being "barely keeping their heads above water" heading into the crucial match against Mexico.