Help with hair

My brown hair is waviest on top and curliest at the bottom, meaning hair closest to the bottom of my neck. I also have color-treated caramel highlights so I use shampoo for color-treated hair which is great for curly hair too. But it gets badly greasy/oily at the roots within a day or two. I have sideswept bangs and I noticed my hair got slightly oilier when I got them. I use dry shampoo, but my hair is super thick, so it's getting to where it almost doesn't work. Do y'all know of any good shampoos and conditioners for oily/curly/wavy/thick hair? My hair is all of those types. Drugstore brands are preferred because I can't afford salon, but some higher-end brands are carried in drugstores and I'm not totally opposed to spending $20-$25 on one thing of shampoo/conditioner.