Phytheol intense by PHYTO Paris (try to reached beautiful hair)

I can't remember how many brand of shampoos that i have been using.
From sunsilk, emeron, dove, head and shoulders, herbal essence, clear ,khiels, bodyshop,kerastase, until kanebo.
I don't know how tired i am trying for trying all brands to be an victim of shampoo ads.
Every time l am going to hair centre or hair product corner, every beauty advisor told with their beautifully promise that their products were best seller.
Again, i only nodded, Trying to believe what they said, give the product opportunity and hope it will works.😔
I spend a lot of money to solve my hair problem, i don't know what is going on? What happens with my hair?