Try this link . It's from USPS regarding missing mail.
https://www.usps.com/help/missing-mail.htm
Here's the tracking for my FedX package .
Wednesday, January 13, 2021
2:55 PM FEDEX SMARTPOST GROVE CITY, OH
Departed FedEx location
11:23 AM FEDEX SMARTPOST GROVE CITY, OH
Arrived at FedEx location
2:03 AM GROVE CITY, OH
In transit
Tuesday, January 12, 2021
1:46 PM KEASBEY, NJ
Departed FedEx location
Monday, January 11, 2021
7:34 PM KEASBEY, NJ
Arrived at FedEx location
Sunday, January 10, 2021
10:08 PM
Shipment information sent to FedEx
So when it's departed from Grove City , it's next stop is Twinsburg , and then it is delivered directly that day to me .
So from the 10 nth to the 14th.
4 days.
My USPS package has been sitting in Akron longer than that.