Hi Seller, Good day!
Lazada's ranking algorithm matches your product title po and keywords with the search terms. Another factor involved in giving your product a higher rank is “Sales last week” and “Sales last 30 days. We can also consider giving discounts and promotions din to increase your sales and maintain that position.
As per your concern regarding Sales, let's be consistent when it comes sa pagcreate ng mga competitive promotions to attract more buyers na mag shop sa shop nyo, also, advantage nyo din po ito sa mga competitors nyo.
We have a lot of Campaign din po na pwede nyong salihan to boost the visibility of your products and gain traffics. And aside on joining Sponsored Solutions, let's secure that we are utilizing all the tools of Lazada.
Hope this helps po.
HAPPY SELLING!