If your website uses Drupal, PHP, Android, NodeJS or ReactJS. any of this then you should check out the crypto project called.
https://hcaptcha.com It works similar to Google Captcha but it has more privacy, open source and easy to use. plugins are available to integrate to your site directly. checkout
That's the one I use. The issue is, they pay net 180. That's a LONG time to wait. They pay every 3 months, on profits you earned 6 months prior.
I'd like to run my own hcaptcha and be in control of the money.