One Folder or No folder? what is the best for Seo?

Hello SEO friends,
Is fewer folders better for SEO?
Or say as an example:
example.com/merchant/nike
Or
example.com/nike
the goal being of course to position yourself well on nike (it's just an example)

the shorter the better?
(I know that the notion of depth is also important)
or the fact that I sort my site by merchant/site is a good indicator for our friend google?
I can't find any sources that settle this question.
Thank you in advance for your help and kindness. WordPress ...