The Samsung Galaxy A50 was released a while ago for the global market but is yet to make its way into the US officially. That will likely change in the coming weeks, as there has now been semi-official confirmation of an imminent Galaxy A50 launch in the US.
https://www.notebookcheck.net/New-information-points-towards-an-imminent-US-release-for-the-Samsung-Galaxy-A50.422937.0.html