You're on the right track with the water and diet stuff. I went through a rough patch a few years back where I really needed to clean up my act and focus on organ health. Found some practical tips at https://unitedrecoveryproject.com/rehab-blog/how-to-detoxify-your-liver-and-kidneys/ that actually worked for me. The article covers both natural methods and when you might need medical help. Sleep and exercise made a huge difference too but the nutrition part was probably the most important thing I changed