Your website could be user-friendly with engaging and quality content, but without a clear and concise call-to-action, you simply won’t convert. Users may want to convert but just don’t have the opportunity or means to do so. Because you haven’t provided it.
Make your call-to-action clear, concise, prominent, specific and compelling. Provide all the information users need so they know exactly what you want them to do next. Create calls-to-action that are relevant and specific; and place them in a prominent place on every page of your site.
Whatever you do, make sure it is very easy for the user to convert when they are ready to.