Privacy is subjective. Use it but dont use it for things you don't want Facebook to know about. Don't use it on your phone. Don't use it on a computer with things you care about. Keep it in a container tab in your browser but don't keep it open all the time.
It's kind of a pain but you can definitely be mindful and only give meta crumbs where others are giving them truckloads of data.
Lmao at ibm doing the same thing for Israel that they did for the nazis