I've just had a look at your website. I'm getting quite a few popups/distractions as soon as I land on the site. I would drop these, or have them appear further into the browsing process. I would be keen to ensure that your Facebook Ads are highly targeted. My preference would actually be to start with Google Ads, as the intent to purchase tends to be higher there (e.g. someone searching to "buy wireless headphones" is the type of targeted traffic you want).
For me, currently, the website isn't doing a lot to explain or sell the products you are offering. I see "affordable luxury" on the homepage, and that really doesn't mean anything. What is the product? What are the benefits? Why should I buy it instead of something from your competition?
Hope that helps - Gareth
The store looks great. If you are having a good amount of visitors but no sales yet, I would suggest you to make your store more interactive. You should make your store more engaging and interactive which will help you to engage the traffic that you are getting on your store. If your store is engaging then it will help you to convert the traffic into prospective or paying customers.
To resolve the abandoned cart issue. You should start notifying your customers when they abandoned your cart. This can be done in many ways. You can send them an abandoned cart push notification or an abandoned cart email. This will reduce your cart abandonment. Not only this you can also start rewarding your customers with loyalty points when they come back to recover the abandoned cart.
For more advice on how you can make your store engaging and increase the conversion rate. Feel free to ask.