Main Virtual Tours SC2 Linux

New to Theta Z1 and experiencing noise in photos.

I am new to the Theta Z1 after experiencing many issues with my QooCam 8K. That being said every photo I take is grainy/noisy. I have tried adjusting the ISO settings, using the DFE HDR plugin, and no matter what I have grain in all my photos. I am not zooming into photos too much, but is this common? I see all kinds of sample photos with no editing and I do not see grain/noise.

Can you anyone help me? Thank you in advance!