Number 1 language you must support is the international languange english so a lot of player will play it. I suggest supporting languages that has latin alphabets (abcd…) and don’t go directly to languages that have its own writing systems.
Disclaimer: Not trying to be racist, it will just make easier steps for you
my opinion on arabic is it should BE INCLUDED i speak it and i see a lot of servers in arabic but… most of them just say في عرب؟ which basically means they are looking for arabic people to talk with
and then eventually more people come and the server turns from semi-arabic server to arabic server
And also heres what i think
English,
Russian,
Arabic,
Spanish,
French,
Italian
And yeah sorry for bumping this topic up