If not, do you have a translation add-on?

Or do I have to create new form for every language I have on my site?

Hey Yael!

Thanks for posting your question!

Unfortunately Form Maker entries cannot be translated with an additional plugin. You need to save your form as copies for each language and translate form labels to necessary languages.

Hope the absence of translation feature is not a significant problem for you.
Thank you! Have a great day!