I still can't see the centre core of the cable poking out of the white central insulator. Camera flash bounce back.
I'd remake those F-plugs as a matter of course --- https://www.aerialsandtv.com/knowle...wall-plates#how-to-attach-an-f-connector-plug
or
I'd remake those F-plugs as a matter of course --- https://www.aerialsandtv.com/knowle...wall-plates#how-to-attach-an-f-connector-plug
or
How to fit F Connectors to coaxial cable for Sky and Freesat
how to make a signal distribution plate
www.satcure.co.uk