Why am I not making sales despite high website traffic?

First Store I Have ever run and the first product I have tried, FB advertising doing well but I don’t know how to convert people. Most of the people I have seen just have a look round then click off. Is it my product or store, Someone please help as I am losing money should I just move on from the product, does anyone know when to move on or should I keep spending?!! Have a look at my store it is https://shademaster.store/

also all the videos dont tell me how much i should pend before i move on i could just keep spending forever and get no return, when is it a good idea to move on from a product.