There was a time when loss of registered mail coming from Europe through New York was an issue for me, but I've had very few problems with the USPS losing things in recent years. I get a considerable amount of stuff from
ebay and Delcampe via USPS (some by registered mail, most not), and the last purchase that didn't reach me was a $7 postal card that I bought in March 2022 from a seller in India. My previous no-show was a similarly low-value postal card, mailed within the U.S. in the early weeks of the 2020 lockdown.