9v lighter/igniter/heater is not working
'A 9v battery' is probably woefully under-powered to drive the wire you have, assuming you mean the usual PP3 size.

Toaster wire will usually require a current in the low amps ballpark to glow red. A PP3 battery is good for low tens of mA continuously, low hundreds of mA if short-circuited, and is quite inadequate.

If you want to try two PP3 batteries, then putting them in parallel to increase the available current would give you a slightly less bad solution, but still be unlikely to make the wire glow. Once you're up to several dozen parallel PP3s, you might hope for success. However, a more appropriate battery type or power supply would be better.