Huawei P20 Pro or right camera?

I'm in a small tuning group and like to take pictures or videos. So far, the older Videocam has been handed by my father and holds the phone. Now I would like to upgrade (also because night shots are not so good).

I'm not so sure and would like to ask you why the differences between a Huawei p20 Pro and a camera such as the sony a6300 or the Lumix gx80 are.

Everyone gets night shots relatively well. All hover about in the same price range.

But is there any difference to the mobile phone recording and camera shots? Which?

Mobile phones have very small image sensors. Although mobile phones like the one you mentioned can make some mistakes due to the double camera, the photosensitivity surface and thus the ability to film in the dark is much larger with cameras with interchangeable lenses. The larger sensor also makes it possible to create a blur in the background of images that are physical rather than calculated as an effect.

You can't compare the performance of a smartphone with good cameras. If you want to film, I would suggest a DSLM of Panasonic and a good lens.

No, a cell phone does not matter how good night shots do not look like a camera with a large sensor. For the cell phone, many sensor pixels are squeezed into a small space. Cameras like the Sony a6300 have these sensor pixels at 6x so much space, so the individual sensors are much larger and catch more light. The result is less noise in the dark, especially in videos.

Here is a comparison of the sensor sizes, the Huawei is the yellow square (1.7 inches), Lumix G80 grass green (Four Thirds) and the A6300 is dark green (APS-C):

Another difference is that, depending on the size of the sensor, the blur increases in the background with the same lenses. The Huawei has e.g. A 27mm f1.6 lens. If you connect a similar lens to the Sony, the background behind the focused object 6x becomes blurred. The Huawei has to calculate this physical effect via software and dual cameras, which often does not look very realistic.