There are a few reasons why you might not be getting sales -even with good traffic. You may need to be targetting more accurately with your ads, you may need to work on focussing your overall marketing strategy.
Let us know your website address and the community and I will be happy to take a look at your website to see how you could improve your strategy to start getting sales.
Hope you are doing well. I just came across your query that you have submitted on the community forum of Shopify, I have looked through your website and I noticed that see a lot of customization on the UI which will for sure hit the performance and would be the right time to move to Headless Commerce.
Here's a snippet of what we do to help you grow your business: