Hi, Villager!
Nice question! ;)
The game language is set by the language set on your device, so, please make sure to check if the language set on your device is the language you would like to have in the game.
Some devices have a secondary language, so there's a chance that this secondary language might be set to a random language, so we kindly ask you to change it to another language of your preference as well.
We wish you a great time!
Block Craft Team