Ask HN: How to analyse results of FB ads/Survey for startup idea?

Hey HN

I recently ran an ad campaign on Facebook which linked to my landing page www.fintechreport.info

The campaign resulted in 12 survey completions for a cost of about £30.

I am not experienced in this kind of thing (engineering background). What is a good way to analyse these survey results and determine if the idea is somewhat viable.

Many thanks