I’m visiting other companies for work every now and then.
If they are in a fancy new steel-and-concrete office building with open space offices, chances are that cell reception is very bad. I once was in an office where I’m certain they had installed cell blockers on the toilets.
I have an LG 55C8 and was able to root it (somebody figured that out last year or so). I don’t know if you still can root your model, but I’d look into it! There’s a patched YouTube app which incorporates ad block and even sponsor block! It single handedly prevented me from buying an Android box and skipping the TV’s smart features altogether.