FedEx seems to be the worst option domestically too. Maybe it depends on your location but they're the only service that somehow fails to deliver signature required packages to my mail room. I've also tried to have them contact me directly while I wait at home and I've tried to waive the signature requirement online, but they still just say "delivery attempted" for 3 consecutive days and then hold stuff at their warehouse. Happened to me twice recently. I now try to avoid buying anything expensive that uses FedEx to ship.
A funny thing I discovered in this process is that "delivery instructions" are shared for all packages to a given address regardless of the associated name, and never flushed unless you go in and do it manually on their website. I found the name and contact information for the prior tenant of my unit on the FedEx site with no other info besides 1 tracking number to the address (it also let me change the delivery instructions with said info). Potentially they were still calling that person when they tried to deliver initially, though I have other reasons to doubt they actually came to the door that day.
A funny thing I discovered in this process is that "delivery instructions" are shared for all packages to a given address regardless of the associated name, and never flushed unless you go in and do it manually on their website. I found the name and contact information for the prior tenant of my unit on the FedEx site with no other info besides 1 tracking number to the address (it also let me change the delivery instructions with said info). Potentially they were still calling that person when they tried to deliver initially, though I have other reasons to doubt they actually came to the door that day.