How to remove public/index.php from the URL

If your host gives you something like /home/username/domain.com/, put the content of the public folder in /home/username/domain.com/ and everything else in /home/username/

It seems like everybody is confused by the new way CI4 deal with the concept of public and private folders. The content of "public" goes in your public folder, whatever its name is, and everything else goes one level up, so it's not publicly accessible.