Almost all websites can use CloudFlare. CloudFlare works for both static and dynamic websites.
CloudFlare is not suitable for websites that stream video or audio directly from their origin server unless the media is done via a subdomain (outside of the cloudflare service).
If you use YouTube or Vimeo for the videos embedded on your website, then that is compatible with CloudFlare.
Feel free to open a ticket and ask our staff for additional assistance if required.