custom decks or used to low win ratio

So I'm playing on EU as both a Priest and Shammy deck (from the below section) and can't get higher than 30% win ratio over ~50 games.
My question is: are you guys/girls writing your own custom decks that go together with your decks or are you using the default one and just changing the cards around?

 

i mostly use custom decks since most of them hover 40% anyways, and you fine tune to reach 50% win rate

 

I've had a look in https://www.thebuddyforum.com/hearthbuddy-forum/hearthbuddy-custom-decks/ but there is only a murloc deck. I don't have enough of them little buggers to run a murloc party .

 

try my deck that i listed in the guide forum

 

Yeah I was using yours and only getting 20% win ratio. I've started again now and seems to be a lot better, must be down to the peak/off-peak times.

 

20%? over 100+ games? jesus that's some bad luck