It's a bit difficult to give advice for settings.
Depends largely on ambient lighting
In astro mode I normally start with a slow shutter speed and go up from there
The first photo you are kind of looking for this result
I took a screenshot of you photo and did a quick edit with my preset
A bit more work and would come our better
But if you go into you gallery and pick the photo
Swipe up and will give you the camera settings