Which DevaCurl products did you buy?
I've tried lots of products and every so often I do return to DevaCurl (used One Condition and my sample of AnGell today). My favorite Deva product to lock out frizz is the Set It Free (works on wet or dry hair), which I find controls frizz better than AnGell, but I hope you can get the results you want with whatever products you bought.
My philosophy is if I can't get results with 1 or 2 products after cleansing, including my leave-in (many curlies are willing to layer on more products than that, but I won't do that regularly), and I've tried different application and styling techniques, then those are not the products for me.
FYI, my favorite non-Deva product is Alba Botanica Soft Hold Style Cream. I do a completely different routine with this product than I do when I use gel or SIF.
Medium-high density, fine-medium, low-normal porosity, 3b/c, permanent color.
CG, no heat, combs, brushes, parabens.
Fall/Winter HG=Alba Botanica Soft Hold Style Cream.
Spring/Summer HG=MGA Sculpting Gel
Current fave LI=Madre Labs Made by Nature for Baby Conditioner.
Limit oils, butters, glycerin.