My online survey adventure!!!

In my first post i said that i was making a survey to hand out, turns out i did it online instead because the other day I set up an online survey on surveymonkey.com to find out my target audience and if they would be interested in watching my documentary about living with epilepsy on BBC Three. Once i completed my survey i posted the link on my Facebook and out of my 2000 friends a whole 12 have completed the survey so far. The statistics so far have been positive as one of the questions i asked was if you would be interested in watching this kind of documentary on BBC Three and 83% said that they would so I guess that's kind of the go ahead i need to do this documentary. Still, only 12 people took it so in hindsight it doesn't seem too impressive so i think to get more reliable results it would be best to do what i said i was doing in my first post and print out a physical survey and hand it around to a variety of people so i can get more of an in sight on how many people would actually be interested.
Btw you can do my survey here

https://www.surveymonkey.com/Home_Landing.aspx?sm=R6QzK3sk7MyntvQOpilZ1pqr7Mjx9k6xopAgRqKo%2bRw%3d

k