Looking for profitable new product shopify, URGENT!

Hi all

We launched our Shopify Dropshipping shop 4 months ago.
With the FB espionage tools and the tests throughout the day, the revenues reach the current balance.
But as the competition is growing, we are thirsty to find a new way to find a possible profitable product for testing, we tried Hot Sales on Amazon and Aliexpress, but the result is bad.
Could someone in the forum give some valuable information? Thank you