Is this damaged hair ?

okay ladies. I've been having trouble with my hair.  The top middle section of my hair is dry and undefined to me it looks like a type 4 texture The perimeter of my head has a decent curl pattern like a3b or 3c texture I don't shampoo I use the Aztec clay mask instead. I cowash and deep condition weekly. I don't know what I'm doing wrong, it'll be a year in November since I've used heat on my hair. When I put my products in and it dry the top section looks and feel dry and rough look stringy waves, The pictures aren't that good I screenshot from video . Can anyone suggest any ad