The Red Sox continue to be the picture of dysfunction, and now the players are disagreeing with each other. On Sunday, veteran Willson Contreras was asked about the team’s struggles and said that it probably didn’t help having so many young players in the lineup who didn’t know how to deal with slumps. Second-year second baseman Marcelo Mayer took exception to that idea . “It’s different with Alex not here,” Contreras said. “But after Cora got fired, the guys got loose a little more because I feel like the tension was gone. ... That’s what I felt. That’s my own opinion. When Alex wasn’t in the dugout [anymore], the team was kinda like loose. But that doesn’t matter. We have to play batter. We have to find consistency. We ave to get better, we have to be better. He added, “It probably doesn’t helpt hat the lineup has a number of young players who don’t have much experience in dealing with slumps.” Mayer thought thtat was just a convenient excuse.…