Sorry that you've carried this pain inside.
It's too easy online to not realize the little extra steps necessary to locking down social media and emails. Because they aren't set up with you in mind. They are business entities.
I once participated on this one group page not realizing it was open or at least unaware about what open translated into. Until I did a name search.

every silly comment, innocent helpful comment. Pages worth. I went through and one by one deleted each thing I ever liked or commented. I was about to give a retainer for a divorce attorney.
Sooo, that fixed that. I'm down to 3 pictures, profile pictures from my twitter and from gmail. And a landscape photo of boulder. There's one of my 3 sons with their father. And one really neat one of my oldest oh and one wrestling tourney photo of him. Two articles from college, one mention of my 7th grade basketball team and that's it.
I have only me for my activity log on fb. Only friends of friends may request my friendship.
Security settings do matter. Had this talk with my oldest via text. At first he had that text confusion before realizing that i wasnt mad. He had a fb tag of a click bait article. And a friend said They should really stop doing that. I taught him how a click bait leads to a troll session and they'll bait and incriminate. And I screened shot how I expect his fb settings to look. Already there mom

gaming complications he said if not locked down. I wanted him to not place himself in situations where anyone would think otherwise.
The past is the past, at this point moving forward is a step forward.