Key take away: The best content is that which doesn't impact the consumer's user experience. Make it seamless and valuable (educate, entertain and/ or inform).
You're asking the wrong questions... instead of "How can we get them to click?" you need to ask "How can we add value where they already are?"
Marketers feel the need to try and push their audience where they'd prefer to have them, rather than catering and adapting to where the audience is consuming already.
EXAMPLE: Links on LinkedIn
5 minutes on LinkedIn and you can see clear as day, the majority of content is articles, videos and webinars, all of which you have to click away from the platform to see. Not UX friendly.
The point is, there's no one size fits all for every platform you use. A quick sentence and a link will no longer cut it. You need to spend the time making your Content native to each platform. For example, a website article. Take it, and repurpose it into a visually appealing PDF to have as a carousel on Linkedin.