Any advice on oven repairs?

[SWv2]

the missus insisted I changed a blown bulb in our cooker about 6 months ago.

Bulb is in the top right hand corner of the oven. Much bloodied knuckles later, couldn't open up the bulb housing.

Bought a special tool from Amazon. Housing still wouldn't open.

It too, remains dark, to this day.

I burned my hand as well on the heating element as that had been on a short while earlier.

In this case, and this case only, I was the special tool.