New to the site! Hair suggestions??

My hair is 2B and very fine. I have trouble getting the volume and body. I was styling my hair a lot during college with curling irons and straighteners and it ruined my hair. And of course, like a lot of other people, I want it back to how my hair used to look. My top layers closest to my face, underneath my hair and my ends are straighter than the rest of my hair so it looks kinda odd. I've switched to natural organic hair products and they don't seem to be working for me. I don't know what to do. I don't know if anyone has heard of the eco-friendly hair line NEUMA, but I liked it at first and now I really know that I just need more volume and help defining my curls. And that just didn't do it. I have no idea what to use. What are the best shampoos/conditioners and products to scrunch in hair that work especially well for curly hair? I got it trimmed recently so it has good layers I just need some advice please :love2: