everything is fine checked where cable runs to uhf antenna and its not anywhere where they installed fiber i have checked the antenna and its still in the same location it was not moved at all the cable has no cut and is not broken anywhere

solved it turned out when they unplugged the old modem they might have pulled or knocked the tv cable because i opened the part that plugs into the back of the tv the copper cable was almost broken in half so i repaired it and now its fine