I can get game over to work when I touch the edge of the screen but I want it to also become game over when the head of the snake touches its own body. How would I do this?

Here is the image
https://i.ibb.co/PW2sYp3/Snake.png

At the moment it will be game over as soon as the game starts as you can see where I have circled in my code.

How would I fix this issue?

Here is my entire project file

https://drive.google.com/open?id=1W9ocPySVGmEJk_GMDr60EdNJkKbEr-Kl

Here's an example Snake project using pen that I wrote a while ago. It tests the distance between the head and each body part to determine if the head has collided with the body. It's one possible solution though there are many others that I'm sure will be suggested