The mistakes didn't really even come in their own end.
Goal 1 - Weird borderline offsides play led to Anaheim possession. Lindgren sets a bit of a screen but this was a shot that Igor should have had. This was weird, kind of unlucky, but ultimately Igor should have had it.
Goal 2 - Odd man rush the other way, Kreider for what ever reason decides to try to pick up a guy who was already marked leading to Zegras being able to get a breakaway. If Kreider makes a straight line for Zegras instead of catching up with who ever passed the puck to him and gliding through the NZ, this goal probably never happens (My money would be on Kreider catching Zegras.)
Goal 3 - Don't ask me what Lindgren was doing on the rush up ice before turning it over... I don't know and neither does anyone else.
Goal 4 - Forget how this one got started, but Igor gets too aggressive coming out of his net on a broken play off the rush and Laf is late picking up his guy.
Lots of unnecessary risks were taken in this game and a ton of them came in the 3rd. Miller in parcitular was pinching like the team was down by 3 instead of up by 3. I get that the message was probably to not back up and let them back in it, but there needs to be some control to your chaos, this was just chaos which led to them... well not getting back into it, but making things closer than they actually were (this was a 10-2 game that some how ended up 6-4.)
The lack of focus on the details is something they'll need to iron out.