The top of my hair is wavy and my bottom 5-6 inches is curly. I have no idea what to do about it. I'm not transitioning from a relaxer or anything.

I just got LOOB to work for my curls but it does nothing for my 6 inches of wavy frizzy thick roots. I've been doing the deadly sin of lightly running a flat iron over my curls to loosen them into waves and then pulling my hair back. my curls are 3c/4a, I have no idea what my waves are.

How can I get my roots to curly and look piecey, not frizzy without being producty?
3C/4A.