Very cool photos! 😍
If you want to max out on the available image area on the page, click on the little ruler icon when the photo is uploaded. A window will open that shows the default pixel size. Highlight the type in the box and then type "full." Then click enter. It will adjust the image to fill the page window. You can also specify a pixel size of your own if you want to control the size of the photo in the window.
I noticed the same thing about wanting to include photos with a new post. You have to go back in and "edit" the post by adding images afterward.
Chris here. I drive a 2-door Velocity Blue 2023 Ford Bronco Badlands with Sasquatch, Lux, a 2.7L V6, and an automatic transmission. It’s fun.