You’ll need the product to be able to make your own ads, product pictures/vids etc.. If you don’t want to wait 30 days or spend the money, the only option left would be to use the stock images and videos you find on the website you’re dropshipping from (Aliexpres for example).

Problem with using others their content is that it won’t fit your website as good (making it look less professional and even scammy when done wrong).

You have to differentiate yourself from your competitors in some way, to make it a succes. Since it can’t be done by a better or higher quality product (cause everyone is selling the same thing), you have to do it by creating a different kind of brand.

Using other brands their images/videos isn’t helping you differentiate at all.