How to solve 404 error

After just completing a fresh install of WordPress, my home page is showing a "404 error". I've confirmed the site's files and settings, but can't pinpoint the exact cause of the problem. It feels like it may be related to server configuration, but I'm not quite sure exactly how to adjust it 🥺🥺🥺🥺🥺🥺🥺🥺🥺🥺.