Topic: My hair looks awful after washing

I have been using MM for a year now. All of a sudden when I wash my hair, it is flat, no volume and it look oily/shiny. So I thought let me try using a ACV rinse, I did and it improved some. The only shampoo that does great now s the apple cider shampoo. I did a detox last night and this morning it look think oily and no volume. Im so frustrated that Im ready to switch brands. Please is there anything else I can try. I just want healthy thick hair, Im still waiting for my hair to grow back too.