Need my body back

So after i gave birth i really started noticing my stretch marks and THEY ARE EVERYWHERE my stomach has gotten darker then the rest of my body i feel like my boobs has gotten smaller and they still have milk in them(its not leaking anymore tho) i just all around dont like my body anymore . Is there any tips you have on flattening and tightening my stomach also getting rid of the discoloration. Stretch mark cream i can use ? And also ive been trying to find a diet to start and stay on that would make me lose weight but help me gain weight in all the right places : starting now im cutting out all grease food

Somebody please help 😫😩