Loco translated language files in plugin folder don’t work

I created an own plugin wished to make it translatable. So I made a template with loco translate. pot file was put to plugins/my-plugin/lanuages/ folder as desired. Than I made a translation to my language (hungarian) to the same location. Nothing happend. Than I created one more translation on the same language but not to Author (plugins/my-plugin/languages) destination but System (languages/plugins/my-plugin). And it worked that way. I dont’t now why it does not work in plugin folder. Plugin header is set to /languages/ to store the translation files. POT file also got there by default so it has no sense. I want to provide some translation with my plugin but it would work if the translation were in plugin not in system folder. Any idea?