Adding Recaptcha to contact form

Hi, saeed451, here are some links to some pages that will help you in implementing reCaptcha:

https://supsystic.com/feature/recaptcha-integration/?utm_source=wordpress&utm_medium=recaptcha&utm_campaign=contactform

Contact Form 7 doesn’t support reCaptcha version 2 right now so you can use this plugin instead to implement that if you want version 2: https://www.ads-software.com/plugins/wpcf7-recaptcha/

Otherwise, here is a page that describes what to do for using reCaptcha version 3 with Contact Form 7: https://contactform7.com/recaptcha/

There is:
Contact Form 7’s reCAPTCHA integration module

On your dashboard. In the left hand menu: Contacts > Integration
Enable and configure the required google keys.
Add field to form.