Spain had trouble in that they had too many players who wanted time on the ball, not enough people making runs for the passes to be made to, Germany the same. England are the other way, Alli, Kane, they play with Eriksen, Sterling with Silva/KDB. We needed a midfield passer who can pick out passes and has great movement, that player was clear as day Wilshere. HE apparently wasn't taken because he didn't play much, despite playing plenty this year and being great for most of it. He's what the team was missing. Henderson has been trying fancy passing all game and most of hte tournament and has been poor while also not being good enough defensively. Dier and others, just not good enough going forward. We have so many players who need someone passing them in behind into shooting positions, Lingard, Rashford, Sterling, Kane, Alli, Vardy all need someone like Wilshere behind them picking out those runs, we don't have a single player anywhere near capable of that anywhere near the level Wilshere is.
Germany and Spain lost because of lack of a quality balance of the players they have, England completely lacked the central midfield creativity while also having Wilshere who literally every single half decent manager says is the only guy England have who would fit into Spanish sides precisely because he's able to play that way.
Not saying we'd have won this game or the tournament with him but it's what this team desperately needed to actually play better football than they did.