NoCode Salespage recommendation for validation

So I have a product idea in mind but before spending months on building something from scratch which nobody will use at the end of the day, I decided to try this NoCode / Validation thing first everybody is talking (for a reason I guess) about:)

I need a landing page where people can enter information in a questionnaire and after this is done they should be redirected to the checkout process. When the checkout is done an email should be sent to me with the information from the questionnaire. I do some data processing and send them the result which they paid for back. This step would be automated if I wasn't just looking for testing the idea. So far I looked into Shopify and woocommerce but it seems they are not suitable. I have never done something in the nocode area but I feel like this is the right way for testing an idea. So if you have a tool in mind I should take a closer look at, let me know😁