So I just followed the instructions for adding a locale in the documentation, I copied all my collecitons to a corresponging locale folder and added new pages with the locale in front of their names. (https://docs.statamic.com/localization)
In my case, the new locale is 'bg'. I am using Valet and when I enter mysite.test/bg I see a blank white page (checked in the inspector, just a head and an empty body tag), but when I open the homepage in the /cp panel and switch the language I see no problem. Is there something I am missing ? I will be very thankful if someone explains it to me.