Hi Bryle
I am Dave, I will help you with this.
1
You seem to be using TreeSize or some other utility to view those files, are you not able to right click and delete those game folders from there?
2
or if you go into the Epic Games Launcher, can you change the install folder location to another folder, then try to delete those game folders?
3
Another option would be to use the free version of Revo Uninstaller to see if that can find those games and remove them for you.