Business partner (marketing)

Am Graphic designer have account in merch by amazon, design (T-shirts, hoodie, sweatshirts, long sleeve t-shirt) upload and sell it on amazon Need someone specialized in Marketing to promote my products professionally And you will get 50% from the total profit all is this will be out of freelancer website (i will not pay this price of course i put any price to post the project) remember.. the more experience you have the more money you will gain so please you must have deep knowledge about marketing otherwise we will not make any sales To be clear with you: -During creation process i determine the price of the product for example if i put the price of the t shirt $19.99 the total profit for the sold piece will be $5.38 -Shipping only to Usa -There's 30% Tax deducted from the total profit -I didn't make any sales yet because i still new in merch by amazon and it's very competitive platform -When getting paid ? explained by amazon " we will remit payment approximately 30 days after the end of the calendar month in which the product was shipped . For example, we would remit payment for products that shipped in April at the end of May, which is approximately 30 days after the end of April" -I will only paying 50% of the total profit, don't have any budget for ads. or anything else