what makes you make this very broad and general statement which is most likely untrue

Tried to buy from amazon.fr recently, had feeling like it is designed and developed by people never used online shopping. It's almost impossible to find products.

And if you try to set English language it simply cannot show list with products. Ridiculous for their billions.

insane take. these are the same problems that all other modern software has.

Which are because the developers themselves don't use the software.