Adding survey forms in websites

Hello Everyone, I wanted to know if you can teach me how to add short survey forms (maximum 8 questions that are answerable by yes and no, only) in my website?
I wanted to use those pop-up survey forms that appear in some websites before leaving the page. My website is powered by WordPress and there's not much fancy stuff or technical codes in it. Are there online resources of survey forms that I can integrate directly to my website? All possible ideas are welcome.
Thank you.
