Go to nutrition facts.org and check the videos around. Perhaps a whole foods plant-based diet may be able to help you.

You can also purchase or download for free the book "How Not To Die" by Michael Greger and go straight to the chapter "How not to die from kidney disease"

I guess your diet has to be low in oxalates, calcium, lectin and other components that may put a high amount of stress on your kidneys

Also, avoid cooking with oils, no added salts and sugars.