I need some help with my hair, no volume, bad waves?

I have thick hair but I like to make it look even bigger. I use Fat Hair volumizing serum and it really works. I put it in my damp hair and then use a hair dryer, which also adds volume. use volumizing conditioner and shampoo, and a heat protectant as well in your hair if you use a hair dryer every day like I do. The hair dryer will also help make your hair straight.