Post processed in Lightroom and the halo is due to artificial light from surrounding.

Crescent moon accompanying Venus and Saturn in the evening sky.
Waiting for this kind of event every time; capturing and documenting the moments is mesmerizing. Covid-19 had given people a new vision of life and night sky is one of them.
It was light polluted place (filled with street light, digital board, focus lamp, other all lights), that is the reason you see a halo in the image that is not of the moon but artificial light.