Perhaps I should modify my post to say:
Self insurance is an option that like most money issues, is not taught in high school.
Find a local financial advisor and ask them to locate for you a specialized advisor who can educate you on self insurance options, of which there are many.

Another option is to ask the local public library to find a book you (or spouse) could check out and read in a first step.

You can repair vehicles yourself,
or you can pay companies to repair your vehicles.

You can insure property yourself,
or you can pay companies to insure your property,
or you can do some of both.