English to French science fiction book series

My first book in my five-book series has been translated. Now the translator cannot continue with the other books. Looking for someone who would translate on speculation, with co-author credit and 1/2 royalties on the sale of translated books. This has proven very lucrative for my Italian translator. Hoping to find someone who loves the story and characters and science fiction to believe in the project. Below is the first book which has already been translated.
https://www.amazon.fr/dp/B09CDX62NJ