Smarty Class has an answer to everything. It’s called Dark Matter Dragonfruit.
But aside from it-that-has-already-been-named, I think the class as a whole is on the weaker side, and Freeze is not its best strategy.
I can’t see the problems you’ve been facing, but I can tell you that I tend to go small and wide with my zombies, and my win rate against Green Shadow in particular (especially freeze) is very, very good. What you need is a couple i.e. Rolling Stones for the Squashes and/or a couple of Rocket Science for the Drops that get out of hand. You don’t have to get complicated. Once you remove these pieces of the puzzle, most freezy cards are just mediocre tempo plays.
Terrorize plays surprising well v. freezy too, I find. You wouldn’t know it, but it turns out moving a Snowpea to an open lane, and then shrinking it, and then moving a Torchwood behind it sort of messes with the general freezy battle plan.
Sometimes you can even wait out a deck you think is freeze, and get a nice Beem Me Up in front of a Snowdrop before it sees buff.
These are just a few of my favorite cards that aren’t too hard to acquire.
If you need more ideas... I’ve got lots of posts, and have posted lots of decks. Some don’t play well v/Rose, but almost all play well v/Rose Freeze.
