https://experienceleague.adobe.com/docs/experience-manager-learn/forms/forms-and-sign/configure-adaptive-form-for-single-signer.html?lang=en#forms-and-sign you do not need to add verify step
I will send you a sample soonin short you will have to write a custom submit handler and that custom submit handler will merge the adaptive form data with your template and return the pdf to the user