(Solved) Weird issue: No matter how many movies I add in this library, these 4 are always in the front of 'Recently added'

Plex Media Server Metadata & Adding Files
4

Define “install”. Only the media files themselves or the Plex data folder?
But unlikely, nonetheless.

The date is in the primary SQLite database file. Either you edit this directly or you perform the above mentioned Plex Dance.