This is why your packages are still "in transit," and why it won't be helpful to call with your tracking number. USPS package volumes are up 30-40%. Staffing is short due to COVID cases and quarantines. The mail is simply backed up. Remember to thank your carriers! #USPSdelays
Adding to this: letters and flats that can pass through the automatic sorting machines are being processed at much faster rates than large packages, which is why you’re still getting cards and catalogs but not your packages.