Liver Cleanse. How does it work? Which one is best?

I had my gallbladder removed a couple months ago, but I am still having attacks and my doctor said my liver is being over worked and I have to start a diet and eat healthier. I want to do a liver cleanse to get a “fresh start”, but not sure which one to do. I have read about lime juice, olive oil (etc.) but want to see if anyone has tried it. I do not want to take any pills or anything, just want to do something natural. I have also heard about Mild Thistle. So I guess my question is, has anyone ever done this? Does it work? Will I lose weight? Do I need to be close to a bathroom when I am doing this lol?