Is there an AI bot which can detect anything like that and automatically delete + block + report to the police? Having to see that sort of stuff would be scarring, no one should have to deal with it.
Cloudflare has that as a service. It doesn't even cost anything. I think it might even be on by default if you're using their file hosting services. Includes automatic reporting to law enforcement and follow up by them so you don't have to get involved. Sometimes, some things are best left to multinational corporations.