Open the picture you want to download
Right-click the image
Select Save image as
Choose a folder on your Chromebook
Click Save
If you are on a website that blocks right-clicking, open the image in a new tab first
Press Ctrl+S to save the image if right-click is not available
If the picture is in an email or file, open it and use the download icon if shown
To find the downloaded picture, open the Files app
Check the Downloads folder in Files
To download from Google Photos, open the photo and click the three-dot menu
Select Download
To move the picture to another folder, use the Files app and drag it to the desired location