Contact form 7 and API Rest

Hello,
I’m using last wodpress version with react front. I want to use contact form 7 for my forms.

When I use this endpoint : https://pmis-wp.laguildedupixel.fr/wp-json/contact-form-7/v1/contact-forms/5/feedback I’ve 404 error I don’t understand why ?

I’ve try with twenty theme and no others plugins and it’s same.

And how I can get the form, what is the end point to have form I’ve put in my back back office ?

Thanks a lot

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