I don't think the issue is collective. We have been wasteful with the chances we created, albeit from set pieces. Certain players like Fred, Matic and Lindelof are making telegraphed hospital passes when we immediately lose possession and have to defend. Martial consistently stands and waits for the ball to feet instead of running towards it and a Southampton defender gets in early and intercepts - I counted at least 3 instances of that happening, there were more earlier.
All of these kill our tempo and flow, and it's the first time our players have had to deal with a vociferous away stadium in ages. We need to get the basics right across the board for 5-10 minutes and we'll be back with confidence into the game.