If there is no cover press the wire against a stud and use it as a guide.
Fishing wire through walls tools.
The tools you need.
A decent stud finder is a must have for every wire fishing job but.
Bend the wires over then wrap several loops of electrical tape around the wires and the end of the fish tape.
Strip about 6 inches of outer sheathing from one end of the cable then hook the conducting wires and bare copper grounding wire through the loop at the end of the fish tape blade.
While handling fiberglass insulation wear gloves eye protection and a mask that covers your mouth and nose.
Flex bits are great for.
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Fishing electrical wire through walls check the whole wall cavity with a stud finder.
If the wall contains insulation try to fish the wire between the outer paper or plastic cover and the wall.