Hello! Is there any way to add a Form entry as a related list to a contact in a custom layout?

Im using Zoho Forms to create a really complex form for an application. Most of the information there, under some layers of logic, will be used only once thus most of the information on the Form will not be needed in the CRM. However, we do need to have something relating the Form submitted and the Contact that did so, for future reference or for that single use. It can be a link to the Zoho Form submission.

How can we manage to do this?

Is it possible? Would it be possible to then use some specific fields of the form to complete some fields on the CRM?

We are having some issues trying to use related lists... We would like to connect for example Zoho drive to contacts, form submitted attachments and things like that.

Please note that we wont be able to create a new custom module for the Zoho Form information as the nature of the conditional logic and the amount of subforms and flow wouldsurpass the custom module capabilities. For example, the Custom Module it will not allow to introduce as many subforms as the ones in the Zoho Form.