If you have a better definition, I'd like to hear it. I don't have many friends, so my definition encompasses all of them. Maybe if I had a better definition, I'd be able to make more friends.

I'd open up your definition:

anybody instead of peers

some shared experiences or some shared values and forget about humour.

FWIW, I'm probably not qualified as I probably have more activity partners, or context friends, than true friends but your definition seemed incredibly limiting.

A friend is somebody you know whose company you enjoy. Depending on context, it does not include members of your family.