How do I make 360 degrees panorama with proper distortion? I already have the 360 panorama image

if yuo want to make the image yourself, you can use Google Cardboard or any other panorama app.

If i simply put it to loop left/right in C3... it didnt correct the distortion. i mean the "fisheye" look.

i mean, like the resulting panorama from this website roundme.com or this website panoramaviewer.1bestlink.net