It’s well known that typical Amazon buyer looks only 3 search result pages. Thus your product should be ranked higher to get sales. Frankly speaking you should be in top 10 products.
BSR is sales indicator of Amazon product. It’s a number and the more sales you generate the less this number is. It’s a completely relative parameter and it’s value/sales ratio that differs between Amazon departments. So BSR = 7893 in Baby category is not the same as in Outdoor & fitness. Not every product has visible BSR value on its details page, but most does.
There is a launch strategy often called “Sales boost”. The goal is increase your ranking on specific keywords. Since your product initially has no sales history you should generate sales artificially. How it works:
You will see how your ranking grows and continue to give away until your product is high enough to generate organics sales. Yes, you would say this strategy seems highly unprofitable but treat it as investment.
This strategy doesn’t guarantee your constant high position after you stop giveaways. Watch your stock and replenish it beforehand.