Nice shots, Im in agreement with #3 - some pp could turn that into an excellent shot.
Manual settings arent as daunting as they may seem. Here are some simple rules, in non-technical terms.
A smaller aperture (larger number) will give you a greater amount of depth in focus, but a slower shutter speed. Conversely, a larger aperture (smaller number) will allow shorter shutter speeds because more light is let in.
A higher ISO will allow you to speed up your shutter to a more hand-holdable limits, using the same aperture in the same lighting conditions.