Your posts in this forum needs to be in English and not Turkish.
Bu forumdaki yazılarınızın Türkçe değil İngilizce olması gerekir.
As for your issue of creating more than the one dropdown submenu in your site menu.
This is not possible through the Wix Editor itself, you can only currently do the one submenu only.
To create more submenus, then you need to do it yourself through the use of code etc.