Please tell me, you think ruby is a good language for creating a messenger bot ?

Look at ActionCable in Rails, IIRC it's used in BaseCamp for exactly that. I whole-heartedly agree with @dlionz reply, use what you know and is easiest for you to achieve your goal.

Thanks you.

I have been practicing ruby for years and I create ruby on rails applications. I want to create a messenger bot and I would like to know if ruby is a good language for that, because many use nodejs and I do not yet have a good level in javascript.