Recaptcha not working, what should I do?

Question

reCAPTCHA

All good and healthy!
Happy Victory Day!
The other day I noticed that the site has become wildly stupid.
For a long time I could not understand the reason, and now I understand ...
In general, recaptcha stopped working when I turned it off (deactivated and removed the link from the head block)
The link www.google.com/recaptcha is not available ...
It looks like recaptcha "covered copper basin"?
If so, what about the functionality for which she was responsible?
What to replace it with?
Or can something be done?

Answer 1

Create your own.