How to deal with the halo of night street lamps with SLR?

When shooting at night, the "star awn" can appear when the aperture is turned down (the numerical value is turned up), and generally it will appear when it is turned to around 8.0.

But according to your three photos, the first thing you need to know is not how to adjust the aperture. Looks like you still took it with an automatic. In automatic gear, the aperture and shutter are floating clouds, because these parameters can only be adjusted in A, S and M gears.

Therefore, it is suggested to learn some basic knowledge of photography through major forums first.

For example, in my work, the aperture of F/ 16 is used, and you can see that the street lamp will show the effect of "stars gathering".