Real Estate valuation Form and Bot with Admin Panel in Next.js React

The goal is to create a tool which generates Forms where each form has different fields. The final form will be integrated in the customers website via integration code. On the website, it shows a small bubble on the bottom left/right and when a user clicks on it, it opens the form in which the user can put his data. After the form is submitted the data is saved in my system. A second integration code simply integrates the form inline on a subpage and not as a floating bubble.

I need a small admin panel to create such a form with different fields and different steps. After I have created a form it should be possible to use a simple code to integrate it in the customers website header tag. Also for each form I should be able to see the entries. Best would be when each entry will be sent to the customer's email address.

I want to use a pre-build dashboard in Next.js / react: https://material-kit-pro-react.devias.io/dashboard

The form should be easily customizable with the fields, styles and settings. Important is a high loading time of the customer's website.

In the admin panel, I want to have a permission system that also the users can login and only see their own form and entries. Me as an admin can see from all users the forms and entries and also do changes.

Please find attached screenshots of a potential form. UX/UI is very important!