I was someone who thought the sens would be able to get a little bit closer to respectability this season, and while that obviously hasn't happened I'm still pretty surprised they're quite this bad. In some aspects it doesn't even really make sense though.
Both of their goalies are performing at an above league average level (Calbot .909 Sv%, Forsberg .908 Sv%, league average .904 Sv%). In all-situations save percentage as a team they sit 15th in the league, directly behind the Lightning.
On specialty teams they have the 7th best ranked powerplay (just ahead of Dallas and the Leafs) while on the PK they sit 17th, not great but also not disastrous.
Up front they have 2 guys who are producing at PPG levels (Tkachuk's on pace for 94 points, while Stutzle is at 82 points). Giroux and Batherson are both at around a 70 point pace. DeBrincat's been doing ok but not exactly as good as he was advertised (22 points but just 7 goals in 27 games). After that they do admittedly look weak at forward, especially with Josh Norris' injury. I still don't quite get why they decided to move Connor Brown so soon. But they still surprisingly have the 4th best CF/60 in the league so they're doing something right in terms of getting the puck on net.
They're defence group doesn't look very good on paper but statistically they've been doing fine. 19th in CA/60 and 18th in xGA/60. Like those numbers aren't really anything to celebrate but considering what they've got to work with it's not bad.
It probably says more about how difficult winning in this league is that you can have a team that isn't necessarily being sunk by goaltending, scoring, defence, or specialty teams and they're still sitting at the bottom of the standings.