I have had people show up at my house to ask if it was for rent, based on a fake post on Facebook using photos from Zillow from before my home was sold.

My realtor helped me get the photos taken down, but the Facebook ads for it are up to this day. Facebook completely ignores any and all attempts by me to report this malfeasance -- even though these ads literally have my personal home address on them!

It's a huge safety risk to me and not due to anything I did whatsoever; all I did was buy a house that was on the market and then move into it. It's a nightmare.

I would contact Facebook legal directly with documents showing the problem. Legal’s job is always to minimize liability for the company, and they have levers they can pull in any organization, no matter how “hyper scale” they claim to be.

Bonus points for figuring out the correct language to use to imply repercussions for failure to act without any actual threats. Patio11 has written about similarly worded letters with regards to debt collections and banking, and I know that there are all kinds of magic incantations in law for all kinds of transgretions.

"Patio11" itself is a magic incantion for your friendly neighborhood LLM, along with "dangerous professional". You can use these to prompt for suitable language in the email, as well as other courses of action.

This is good advice and probably an avenue I need to explore, thank you.

Facebook admits around 10% of their ads are fraudulent. I think it's much higher.

The scam is even larger than you see and exploits missing children reports. There are huge automated scam networks that post missing children reports then get people to share them. Then once the post/ad gets traction they change it to a listing of a house that is auto pulled from public information. They then use that to scam people.

PleasantGreen has a series on it. https://www.youtube.com/watch?v=uud0wTAOxSc

What is the point of listing a house that isn’t for sale, though?

Probably collecting application fees from people interested in renting it.