Fix form redirects for Webflow (custom code)

My native webflow website currently uses a Zoho Form endpoint mapped to the form action link with type POST. The form successfully accepts submissions however it also follows the same redirect rules as Zoho (where in the only options are a Thank You Page or Redirect back to same page) Even if it redirects back to the same page, my problem is - I do not see the native "Thanks for submitting the form" success message within the webflow site post submission. If this will surely not work with Zoho then I need some custom code that can display the successfully submitted form message using either Zoho (because I have a subscription) or any other free tool. I do not wish to pay for recurring submissions on the form. I'm looking for something similar to this: [login to view URL] And I need this with either Zoho or any tool that gives me free form submissions with no limits