Problem with Samsung TV connection

[5WRV]

We just bought a new-to-us 2014 Cincinnati 43' that came with Samsung TV with a One Connect unit where you connect other devices to work with the TV. The TV itself does not have a coaxial outlet so no way for me to connect a coax directly to the TV. Further, This TV is the type that is raised and lowered into a cabinet so it's difficult to reach any other outlet behind it. All the cables and wires go thru a hole on the wall at the bottom behind the cabinet that hides the TV and comes out thru a hole in the wall inside a cupboard above the TV when the TV is raised. I have tried different ways of connecting what I think is a probability but to no avail. I am not tech savvy but I understand simple connections because I take care of electronics in our RV. Any advise is appreciated.