Hey, there was someone working on a french translation, but I haven't heard from them in a while. I have to warn you that it won't be easy. There are some pictures with text that need to be edited, and some words are variables that can change depending on decisions made by the player.
If you still want to do that, it would be best if you join my discord and just @ me there. There's also a dedicated (hidden) translator channel that's pretty quiet atm.