How to fix no good quality camera?

How to fix no good quality camera?
I’ve recently been experiencing some frustrating issues with my camera. Every time I try to take a picture, the quality turns out poor no matter the lighting or setting I’m in. It feels like my camera is stuck in a mode that only produces blurry, grainy images. I’ve tried adjusting the settings and cleaning the lens, but nothing seems to work. This problem is affecting my personal and professional photography projects, and I’m unsure what else to try. How can I fix my no good quality camera and ensure that it starts taking clear, sharp photos again?