There are plenty of non conductors in the world. The most common is probably plastic or rubber. Glass is also non conductive. Hope this helps!
Metals are good conductors. Some non-metals are good conductors, but many others are not.
Generally, non metals are non conductors (with exceptions such as graphite, fullerene etc)
metal
Most non-metals are in fact considered to be non-conductors. Some non-metals however do have the ability to conduct heat and electricity.
Kitchen Utensils Electric Irons · Non-electric kettle
Some are, such as silicon and germanium. Others are non-conductors known as insulators, such as glass.
rubber
Graphite
Thery are non-electrical condutors
strong
Electrical insulators are made from materials that are poor conductors of electricity. Metallic elements are good conductors, non metallic elements are poor conductors. Some materials used as insulators are, paper, glass, ceramics, rubber and plastics.
Metals are good conductors. Some non-metals are good conductors, but many others are not.