Your settings aren’t necessarily “wrong” for the sky—the issue is that the foreground usually needs separate illumination or a separate exposure.

Common ways to do it:

1. add light during the exposure

• Use a low-power flash or light painting to briefly illuminate the people or landscape.
• Because the foreground is lit only briefly during a longer exposure, the sky can still record normally.
• This takes practice, especially with people.

2. blend two exposures

• Take one photo earlier at dusk for the foreground/people.
• Take another later for the Milky Way, focused for the sky.
• Match processing as closely as possible, then combine them with masking in editing software.

A single long exposure can work too if the foreground is naturally bright enough or carefully lit, but often astrophotography scenes with a detailed foreground are composites or use added light.

So yes: flash or light painting can help, and for the cleanest result many photographers use two shots and blend them.