How to scroll without moving my cursor in Visual Studio Code from the Keyboard

fn + ctrl + up/down arrow did the trick for me on Mac for moving just one line at a time.

On Windows it is ctrl+Down Arrow. On Mac I believe it will be cmd key instead of ctrl

For me on mac what worked out was CMD + fn + Up/Down Arrow

On my Mac Ctrl+Page Up/Down works similar to mouse scroll. This doesn't affect the cursor position.