They'll look to play a more disciplined contest Tuesday night when they host the Vancouver Canucks, who are dealing with their own issues of late.
Philadelphia fired Peter Laviolette on Oct. 7 after an 0-3-0 start, and Berube won his head coaching debut the following night, 2-1 over Florida.
The Flyers, though, can't seem to stay out of the penalty box no matter who is behind the bench. They've committed 45 penalties, been shorthanded 33 times and have allowed seven power-play goals, all ranking among the worst in the league.
Detroit went 3 for 7 with the man advantage Saturday, handing Philadelphia (1-5-0) its second straight loss with a 5-2 victory.
"We've got to stop taking penalties, we really do," Berube said. "It's been an issue in this organization for too long. The dumb penalties have to be eliminated altogether because they are unacceptable."
Erik Gustafsson and Tye McGinn had goals Saturday, but the Flyers haven't scored more than twice in a game this season. Despite the club's many struggles, Berube saw some improvement in the last contest.
"You don't ever want to get comfortable with losing," Berube said. "We played a solid game, a lot of urgency. We were competitive, but it wasn't enough."
If the Flyers continue their undisciplined play Tuesday, it will come against a team that has failed to capitalize on most of its power-play chances. Vancouver is 0 for 7 over its last four games and 2 of 19 on the season for a 10.5-percent conversion rate that is among the NHL's worst.
The Canucks (3-3-0) have dropped back-to-back 4-1 decisions following a three-game winning streak, losing to San Jose on Thursday and Montreal on Saturday.
They reached a low point in the second period against the Canadiens. Fetching a cleared puck behind his own net with Vancouver on the power play, Dan Hamhuis let the puck slide away from him. It went off Jason Garrison's skate and slipped in front of Roberto Luongo, who was unaware of the mishap and watched as the puck slowly went into the net off his skate.
Coach John Tortorella believed that the weak goal was merely an extension of his team's recent problems.
"We didn't play a good third period," Tortorella said. "Whether it was a result of (the goal), I don't know. We talked about (how) that wasn't going to beat us, but we certainly didn't play a good third period."
Luongo made 34 saves, but has a 2.99 goals-against average and .898 save percentage in five starts.
"Stuff happens out there," Luongo said. "You just have to stay focused."
Captain Henrik Sedin, who recoreded his 799th career point with a goal in the second, said the Canucks have to regroup quickly.
"We can't get too down," Sedin said. "We played good enough to win, but we weren't able to finish off."
Luongo is 2-3-2 with a 3.46 GAA in his last seven starts against the Flyers, who could start Steve Mason in net after Ray Emery allowed four goals Saturday.
Mason has a 2.02 GAA in four starts but is 1-4-2 with a 3.46 GAA in his last seven against the Canucks.