Hello sunshine! Frizzy or “fuzzy” hair can be caused by an assortment of things. It could mean that the middle portion of your hair has high porosity. Porosity has to do with the hairs ability to retain moisture by keeping the cuticles on your hair shaft closed. When hair cuticles stay open instead of laying flat against your shaft, moisture is released and the product is frizzy and dry hair strands. However, there are remedies! You took a great first step with using coconut oil to add and seal in moisture. I would also suggest trying an Apple Cider Vinegar Rinse. I usually perform my AVC Rinses with ½ of Apple Cider Vinegar and 1 cup of water.
Read this article here and this post here for more info. Goodluck!