You should put yourself in their shoes. Think like a bug, feel like a bug. When you have become one with insects in your mind, then will your fear will no longer be there, because you will have been an insect and realized they’re not so bad after all.
I’m 22% kidding. What you should really do is think about what you fear about insects. When you see one, think “what could happen to me?” If the odds that something really bad could happen because of that bug, get scared. More likely, the odds will be better that nothing will happen to you because of that bug.
If you’re scared a ladybug will land on your eye, think “what would happen if a ladybug landed on my eye?” Nothing would happen if a ladybug landed on your eye, because ladybugs don’t do anything but stink when you squish them, which is also harmless. Same with a butterfly. All they do is fly around. If you’re scared one will fly into your hair, think “what’s worst case scenario if this butterfly flies into my hair?” Well again, nothing, because butterflies can’t do anything either. Neither can ants or beetles or crickets or cockroaches or moths.
You can be afraid of bees and spiders if you want. Worst case scenario there is you swell up and die or get poisoned and die, and death is a common thing to be afraid of so it’s OK.