Think about why the Columbus Blue Jackets didn't hire Gallant, not only Jarmo Kekälainen, but Don Waddell too, even Don Don didn't even consider him.
Also look at the Rangers. Once the opponent adjusted to the style, he couldn't make changes. And in general, the Rangers relied heavily on Panarin and especially Shesterkin.
He was lucky in winning the WC that the Russian national team coaches were pretty weak. Otherwise Russia would win over Canada.
Your main problem is the centers, not the coach. If Laine was playing, it wouldn't be so bad, since he would lead his line even if Condotta or Florian Xhekaj were playing with him. But your other wingers are not so good.