Help with Derealization/Depersonalization Symptoms

My derealzation/depersonalization is so bad every single day to the minute I wake up to minute I go to bed. I’ve seen so many drs, had a mri of my brain , that came back fine. I feel there’s something wrong with me that the drs arnt finding. I don’t understand how it can be normally to think everything is fake everyday and feel like I died and I’m living in a dream. It affects my vision where everything looks strange and people look strange to me:( my psychiatrist says it all mental but I just don’t believe it. help….