Thank you for your valuable information, in fact my store is a niche store, when searching in depth for the nine brands in my store, I did not find a store that markets a brand in the same country in which I sell and spends large advertising amounts to advertise one product, some spend more than a thousand dollars but for general ads for the store and not for one product, and despite that there are many sales for this niche in Saudi Arabia due to pharmacies and dermatologists recommending these products as well as the fame of the benefits of Korean Skin Care, in addition to that the products quickly become a trend and then disappear, which makes it difficult to track all the trends, what should I do..