This is for a wide variety of reasons and unfortunately it can take some research to find out what actually works.
Go through the threads of others having gone through the same situation and compare recommendations to your business.
Congratulation for your store.
Hope following suggestion will help you.
Congratulations on your new store. Look great and minimal on the first look, so good work. There is definitely room for improvement.
You’re in one of the more frustrating scenarios! I can understand.
However, it's pretty clear where your problem lies. You've nailed down your advertising and need to improve conversions on your website.
I hope this advice helps out. Hoping for more sales in your store!
Hey East Vibes,
Keep the below-listed points in mind for optimizing your store and improving sales rate:
All the best!