Manchester United manager Ruben Amorim said on Tuesday that while dealing with the Premier League club's problems is frustrating, he is confident in his ability to resolve them. United visit Wolverhampton Wanderers on Boxing Day, looking to bounce back from two straight defeats. Amorim took charge last month with the team sitting 14th. In his six league games in charge, United have had two wins, three losses and one draw. The Old Trafford side will spend Christmas Day in 13th place, their