Welcome to the Forums romeolove, I'm very sorry to hear of your loss of Romeo.
Have you yet listed him on Parrot Alert 911? Many lost birds are reunited with their owners through that service, sometimes weeks even months later. I've included their link below...
https://www.parrotalert.com/
The following link has lots of other great ideas too...
Bring Them Home! Tips On Locating A Lost Bird
Please let us know if there's anything else we can do to help. Sending every good wish and hope to you for your Romeo's safe return.