Hello Kenny,
Raw is what I would call the BEST diet.
However, there are dogs that won't eat it. I currently have four dogs.
Willow is an extremely picky eater. She won't touch raw with a ten foot pole. She is offered a choice between freeze dried, air dried and premium kibble. She may or may not eat.
Kylee loves raw, as does Pheobe, but we are currently trying Fresh Pet on Pheebs to see if it helps with her acid reflux.
Conner will eat raw, but not the patties or the all fish one.
So, try different proteins (and rotate between at least 4), as well as different brands and form... patties, nuggets, etc.
Don't give up too soon. Took awhile to find out what Conner liked.
If, in the end, he's just not a fan, be sure you're feeding a premium kibble, and again, rotate proteins, even brands. Also, if you go with kibble, be sure to add water or bone broth to be sure they are getting enough liquid.