I would suggest you to start using fb campaigns to get some traffic to your stores. At this time when the competition is top-notch it is becoming extremely difficult to get organic traffic on your store.
Paid marketing is the way how almost all the e-commerce store owners driver there sales from.
You will need to put your products in front of users, and paid fb campaigns are the quick way to achieve that.
Try targeting lookalike of your past purchasers, this way you optimize campaign to find people with closest resemblance to people most likely to convert on your store. If you have significant abandoned cart, try retargeting campaigns. Most of sales for our clients comes in with this campaign. Try running prospecting campaigns for initial 30-45 days and once you have enough conversion start retargeting
Use this campaigns, we have seen our clients getting significant part of their sales by following below strategies: