When to look for US suppliers?

I’ve been using CJ dropshipping as a start, but I’m sick of their negligence and stupidity. You add a product today, and in a few weeks that product can be gone.

What kind of conditions do I need to cover, the website is still very small, but growing. It would be even better if there was some US platform like CJ dropshipping, and if they could also send the products to canada, australia and more too.

What kind of daily traffic or legitimacy do i need to have in order to work with someone who is not a selling just Chinese garbage? We don’t have a warehouse so they would also need to send the product directly to customer.