Whole Wheat Bread Flour How Can I Get Whole Wheat Bread To Not Fall Apart And Not Be So Thick?

How can I get whole wheat bread to not fall apart and not be so thick? - whole wheat bread flour

I have bread wheat with a high proportion of white flour sticks and it is soft and spongy, but how can I make sure flour, whole wheat bread (or oats or seeds, etc.) are not as thick as a brick?