Why does my hair do this?

Well I have my hair kinda long, it goes past my nose, and I like it. It’s basically an afro but I basically wet it before I go anywhere so it goes down because that is my preference. But when I do so the hair on the top and sides of my head are like curly and nice and all together, but on the back of my head they are just random hairs going anywhere and everywhere and they dread up on their own. I’ve been brushing my hair and using shampoo and conditioner. But it just stays like the way it is.. what am I to do? I want my hair to be the same all the way around but no matter what the hair on the back of my head stays dry and crunchy feeling. Is there a way I can fix this?