The Leafs are being a little too cutesy with the puck (aka Hainsey PK "clear") because they are getting big heads. They got away with it but now teams are starting to catch on. Sometimes you have to make the simple play to survive for later.
They just looked flat, they came out bad but managed to pull themselves into the game but you could see it wasn't going to be there night imo
Just not sharp enough, sometimes a deserved loss isn't the worst thing to tighten up the mental game