LG TV’s can use USB media to “record” TV via its built-in PVR software on the TV’s tuner, and that folder is where it would store the programmes that it records. When I plugged my MyPassport Ultra into my LG TV it created such a folder, although in my case it was in addition to the files and folders that already existed on the drive.
Sorry I can’t be much more help as to where your previous files/folders are, but that may help to shed a bit of light as to where that folder came from. Looking at the images it looks like maybe the partition has become corrupted (I note also it’s called "Local Disk ( G: ) in the drive list rather than a named drive product), so as ERmorel says you may be able to fix it up with data recovery software.
Best of luck!
