When I search for app on my app stores I can’t find them

Well, if you're using the correct app's name while seaching for it, and if you're sure that that app exists in your country App Store, contact Apple directly and ask them. Use this link:--> Get Support

Regards

Giulio

It may depends on your country App Store (not all apps are available worldwide).

What app are you looking for?

Regards

Giulio