"Home" page site tab but not in back office "pages"

My god i have wasted so much time just learning how to make pages and now. I have a problem that my site when i type in the URL goes to a default “Home” page. https://www.michaelscarchilli.com It shows my header but the page is not found. When i go to my back office i only have three pages 2 public, 1 private and 0 are named “Home”. When in preview, even the admin buttons on the top has no “Edit” button like the other pages when viewed. Would anyone have any idea WT_ is going on with this? I am really frustrated as i really thought WP would be very easy to use.

Things like showing a different header for different pages cant figure that out. How is that done?? I’d like to have different pages having different web forms and such. Can’t see how to do these things. Can anyone help me out. Especially the first issue. Thank you.

Mike