This may not be the answer you are looking for but if you don't have curly hair, there isn't a product that will give you curly hair. Many products may claim to give you 'that curly look', but in reality those products are used to enhance the curls you already have. Please don't texturizer your hair. If you don't have curly hair, it will make your hair semi-straight/semi-kinky. For curly hair styles, check out my directions to an alternative shake and go look or do a straw set.
However, there are some tricks you can try to use such as applying your product(s) (gel, leave-in conditioner etc.) on soaking wet hair in the shower. Then you could either shake your head to let the excess water leave the hair and the separate the curls/coils or you can plop or scrunch the excess water out. Also do not touch your hair at all while drying and it will cause your hair to frizz.