This one is easy.
You should repair your wall oven unless the parts are no longer available, or are priced beyond reason, or you just really don’t like it anymore.
Wall ovens are reparable for a reasonable cost as long as the parts are available.
Heating elements, light bulbs, sensors and fans are all relatively inexpensive when compared to the cost of a replacement oven, especially if replacing the oven requires cabinet work.
Give me a call or setup an appointment online and I’ll stop by and repair it for you.