Importing a moon with 50 million polygons

I tried, but firstly I don’t have a normal texture, and secondly there will be distortion due to projection onto 2D, because there is no way to make a projection of a sphere onto 2D, I’m thinking of doing it in combination, dividing the moon into approximately 50 sections, but still parts of the ball, and load them, and in the distance there is a moon with approximately 1 million polygons