Sounds like an idea for startup ;-) Serioualy, there's market for this, and people are gonna pay money for the service.
It exists, it's called Bookface ;)
You pay 7% of equity to YC and you have access to engineers at FAANG.
Do your own networking / ask your own social network. Find an employee and then send an email. Find a discord server where one is and DM them. It's not impossible to talk to an a facebook employee as a random person. In the age of the internet we are all deeply connected.