My assistant deals with this regularly. She will have a package scheduled for delivery on Monday for example. Since COVID she works from home and has a killer camera system. The delivery will later say something like, attempted, resident not at home. Pull up the cameras, mail person drives by and never stops. Another one she gets is "Unable to be delivered as addressed." It's a pre printed label from Amazon. Next day or so it shows with the same label.
My best friend's dad and wife both retired from the USPS. His dad told him, "They can do anything but steal. They can be lazy, they can be slow, they can be bad, but unless they steal you can't get rid of them." Sad, but apparently true. On those false statements, several residents tried to file charges against the delivery person for falsifying a government document. Big surprise, they wouldn't take the case. She also gets a daily email scan of the mail she is supposed to get. She gets peoples' mail from the next block over, but not hers. Many people in that neighborhood exchange mail over the next several days so eventually someone hopefully brings you yours.