Hey @LinkanH
I just had a detailed look at your website and there are a lot of things which I have noticed that can be the cause of not getting much sales like for example your navigation is designed pretty basic, and mostly all the product information is added in the description itself instead of using new user-friendly sections to improvise your website look and many more. If you want then feel free to connect with me and I would be more than happy to give your website a professional look which will not only attract customers but will also help you out in maximizing your sales as well! 
Best Regards,
Moeed