As the title said, when I view the rendered result it looks fine and it shows the transparent background :
Meanwhile, when i try to export it as a png it has a black background:
I have already tried to change the rgb thing with rgba but it exports as a white circle in a white background :
I do not know what caused this since im fairly new to blender but here are the picture of the nodes in case i did something wrong :
In case this is helpful, ill post the blender file here : https://drive.google.com/file/d/11VMxSpttG-cvmPSFXbfLteBW3Jh2ED0k/view?usp=sharing
EDIT: By exporting the image, I meant saving the image in my computer. When I save as RGBA it shows the sphere but no glare effect in what appears to be a white/transparent? background.
While when I save as only RGB it saves as the sphere with the glare effect, but with a black background.