Hey, I would like to ask whether is it possible to add a captcha solution into websites hosted by glitch. And if so, how?
Yep! You can add captcha in your websites with many ways.
The official Google way:
https://developers.google.com/recaptcha/docs/v3
Funcaptcha (need account with funcaptcha!)
https://arkoselabs.atlassian.net/wiki/pages/viewpage.action?pageId=819905