mine too for the most part- they lost 2 packages in around 10 years- not too bad-
I think I’ve lost one package - and that was FedEx.
(UPS is usually excellent here.)
Maybe lost one USPS letter in my life; and one other came late looking like it had fallen in a mud puddle.
I could send a box of rocks to Siberia 3rd class and they would get it there overnight but if I send something important they will lose it.