Your prices are too high as compared to other sites and your top competitor is Shein because some of the stuff is very similar. My only advice is to lower down your price in the starting, once you got a good customer base and loyalty than you can increase your prices according to you.
In order for your business campaign to be effective you need to understand what customers' psychology need? , what do you want? Once you understand, you will have a specific campaign. If your product has many competitors, you need to offer low prices to entice customers. Next you need to have promotion policies, after sales, care .... See what your competitors are doing, and choose your own way, good luck