off topic: fb posts seen by my friends
i have turned on every privacy setting i know and update them every few weeks but FB has its sneaky way of letting my friends know (comes up on their feed) what i post on groups i join (even though some are and some are not in the public and closed group i joined). can somebody tell me how to turn off those settings (if such a thing exists in fb lol)? i'm sick of friends poking their nose into my questions/ seeking advices on social groups i join.

Ok I know I've done a few of these but my friend posted this on FB and we're getting some hilarious results. This was my last text:
New Group..
Ladies, if you would like to join the group I created, it's Charting while ttc. Please join our private group . And no TMI photos allowed. Yay!!!!!!
Snapchat? Fb? I need new mommy friends. None of my friends have kids & we've disconnected 😑 sucks at times
Literally have no friends or pt people to text haha every friend turned their backs on me or just don't get my pregnancy or SO issues and I kudu keep to myself. 🙄