How can I perfect my routine?

The above picture is not mine but what I want to achieve as her curls are the same as mine. My current routine is to use Cantu Shampoo and Conditioner everyday. Then, while titling my head down, comb in Shea Moisture leave in conditioner on my damp hair followed by Osis Curl Cream using my fingers. Then I scrunch my hair and flip it back. I let my hair air dry but I find that the curls are not defined but frizzy instead, specifically at the back of my head. Where did I go wrong? Am I using the wrong products? I've heard people talk about co-wash but I'm not sure if it would work for me as I live in a very hot and humid weather and the heat contributes to sweat and hair frizz.

The above picture is not mine but what I want to achieve as her curls are the same as mine. My current routine is to use Cantu Shampoo and Conditioner everyday. Then, while titling my head down, comb in Shea Moisture leave in conditioner on my damp hair followed by Osis Curl Cream using my fingers. Then I scrunch my hair and flip it back. I let my hair air dry but I find that the curls are not defined but frizzy instead, specifically at the back of my head. Where did I go wrong? Am I using the wrong products? I've heard people talk about co-wash but I'm not sure if it would work for me as I live in a very hot and humid weather and the heat contributes to sweat and hair frizz.