A decent stud finder is a must have for every wire fishing job but.
Fishing wire through walls tools.
The tools you need.
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.
Bend the wires over then wrap several loops of electrical tape around the wires and the end of the fish tape.
While handling fiberglass insulation wear gloves eye protection and a mask that covers your mouth and nose.
Flex bits are great for.
Fishing electrical wire through walls check the whole wall cavity with a stud finder.
Flex bits and glow rods are the go to tools pros use for fishing wires.
Fish tape wire puller through wall wire threader fish plus fish cable fastener with steel rope 20ft 6m.
If the wall contains insulation try to fish the wire between the outer paper or plastic cover and the wall.