Hey you made some good effort - I like the camera work so far! Keep it up if you're trying to finish it. I also use GODOT so I could see the debug - I'm no expert, but since the window was hard for me to see, it may help if you allow window resizing:
Project(Top left) --> Project settings --> Under the "Display" dropdown section--> click "Window "
Under "Size" enable "resizable window " then scroll down and under "Stretch" Change the "Mode" to "2D" and "Aspect" to "Keep". Hopefully that helps :)