Routes Not Working On Live Host ?!!!!!

If CI is only used as backend, you should probably set a subdomain like api.example.com and have your backend (CI) and frontend (Angular) separated with their own domain. The public folder is your document root, it should not be inside the document root with all other files. And don't tell me "look dude" like I'm stupid. You didn't even mention you had 2 separated apps for the front and back.