Hi....I don't know if you have Facebook but I joined a group there called Natural Kidney Journey.
Lots of greens, cucumber,spinach etc...
Lots of vegetables , carrots, cauliflower, broccoli, peas, greenbeans, eggplant, red onions BUT no sweet potatoes and if you eat potatoes , let them stand overnight to leech the potassium.
All kinds of berries, blue berries, Strawberries etc.
Fruit, apples, pears, green grapes, melon, cranberries, etc...
Lentils, black beans, chickpeas etc.
Flaxseed, ground down and added to food is excellent.
Spices, cinnamon, turmeric , ginger, lots of garlic etc.
Natural kidney journey also supplies loads of recipes.
Oats for breakfast.
There's more but this might give you some ideas and hope it helps. Blessings