Ok so we revolve around the sun. At nighttime in January we face away from the sun to see the nighttime sky and stars.
6 months later in July we’re on the opposite side of the sun and now again at nighttime we face away from the sun.
But this direction is now 180 degrees away from the January direction… but the nighttime sky is still the same
How is that possible
It depends on where you are on the surface of the Earth. The closer you get to the north/south poles, the more consistent the stars get, because the Earth rotates on a similar axis as its orbit around the sun. Closer to the equator, you’ll get more variation based on season.
The Earth tilts slightly with the seasons. If you’re far north/south, you’ll see seasonal variety near the horizon, while the stars directly above stay mostly the same. If you’re near the equator, the stars that are directly above will change seasonally, but there will be more consistency on the horizons north/south.