Another option is to "unfollow" everybody except for a selected few.
I block all of their sites in my hosts file so can't even view a Facebook event page or group. It has only provided benefits, and I haven't missed out on anything. Productivity is up. Social life is better.
Ideally that would be perfect.
Realistically, the people running the groups and events have 99% of their time dedicated to non-communication activities and standing-up a mailing list or website is outside their time-capacity AND experience.
As an example here in Ireland we have a group called Airliner Experiences that organise enthusiast flights on rare and interesting aircraft. They exist only on Facebook, I have asked why and it's because they "don't have time" to run a website for the few non-Facebook oddballs. So I've missed many potentially-interesting experiences but they haven't missed my money because there is such a huge audience in Facebook.
I unfollowed everyone years ago and it has made a huge difference in how I think of Facebook. Without the persistent feed and flood of ads, it’s just another tool for communicating with people, one that is seldom used when faced with other alternatives. Facebook is now mostly harmless, and I only spend maybe a minute or two on it every few days.