Camera pans on the Iphone SE are a disaster

Hello community,
I have found that the camera pans on the Iphone SE are a disaster - whether slow or fast filmed. It flickers / trembles like crazy ...
So my question to the camera, photo and film experts:
I can choose in the settings
720p HD (30 fps) to 4K (30 fps).
The default setting is 1080p HD (30 fps), which I had previously.
4K is out of the question because I need a memory card ...
Would there be a change if I set the whole thing to 720p HD?
Or is it generally due to the Iphone SE?
Another smartphone would probably be more likely?

I like to film, I also have an HD cam, but I don't always have it with me ...

Thank you for your answers, experiences, recommendations etc ...


Greets,
symbio
(sorry for my bad english ...)

Hello community,
Doesn't have any advice??

Greets,
symbio