I was in a similar situation, do you work in a business to business product line? I felt like the nature of the purchase process was so different from consumer products that marketing and design were truly secondary.
Eventually, I was able to make some allies by providing good design that hit cost targets. It’s hard to do, but comes with the territory.
That said, it was a total bitch the entire time I was there and they eventually went under.
So - get out as soon as you can.