Hi,
The text you enter in the input will be converted thanks to the strtotime PHP function:
www.php.net/manual/en/function.strtotime.php
Also, since you want to filter the products created on a specific day, while the product_created column stored the date + the time, you want to have two filters on the product_created column
product_created >= 15-11-2019
AND
product_created < 16-11-2019
If you try product_created = 15-11-2019, that would only give you the products created on the 15-11-2019 at midnight ( at the precise second).