Is there a relationship between sales and new uploads?

I started selling on in June and my sales grew in July and August and then suddenly dropped. Is it because I didn’t upload new items?

End of august, I start selling but not yet get sale, views on my items very low…

Hard to say if there is a relationship between new uploads and sales, but new uploads tends to stimulate sales of old items.

And some items occasionally go viral, and getting some of your products on page one, will maintain sales for some time.