Error Message when ReCaptcha is not checked

Basically, Ive created a basic form following the docs, with a Recaptcha implemented by Netlify. The problem is, when I don’t check the ReCaptcha, it doesn’t give me any message saying I should’ve checked it, it just reloads, leaving it for confusion if the message was sent or not.
How can I show an rrror Message when the ReCaptcha is not checked? Did I do something wrong and it does that automatically?

My WebSite

Hi @nguilherme010, thanks for posting.
There is a similar post here on the Netlify Forums that shows you how to implement the reCaptcha validation.
Kindly visit the link below on how to configure the reCaptcha validation.

Hope this helps.
Let me know if the suggestions in the post helps.