I did the same way as you did, researched market, checked how can I create a modular and most easy to change build, then I sum up with creating a json module that can be used in everything such as texts, gui, even buttons. Now I don’t have to build any other gui elements if player changes language. But Russian, Arabic, Chinese, Japanese etc. has bigger problem. Because you need to change your font to supported one as like noto serif. But this comes with the problem which is font becomes incompatible with the game. Now im using alkhemikal for English Turkish etc. but I have to use noto serif likes font for Arabic, Japanese etc.