One sentence only? Even @Bossman would struggle to sort this mess out with a single sentence. We need something along these lines...
Well kind of is one of the problems. Captains meant to set an example, not give half arsed effort, complain to other players instead of giving encouragement and in the meantime not been able to complete a half decent pass all game
This is a sentence I sometimes used when I was in charge of a team in the North Berks League: Look at your colleagues shirts and always pass to player wearing that colour shirt.
Right lads, folk have paid good money to watch this ***** and they’re quickly stopping giving a ****** and you lot are to blame.
Try not to let those nob heads in the crowd screaming at you for mis placing a pass or not chasing a ball down that there is no point chasing affect your game because you are very good footballers and when you get it together you can beat anyone in this league.