When you go to /Android/Data, do you see a listing for "-> Installed apps"? If so, tap that -- you should see a dialog that starts with "Write protected!" It goes on to say "You need to choose the directory from a special Android dialog to give Total Commander write rights." Tap Yes, then on the next screen tap Use This Folder (without specifically selecting any of the listed folders) -- it should then ask "Allow Total Commander to access files in data?" Tap Allow.
You should now be able to see all of the folders that apps use. But keep in mind that there may not be a whole lot of files visible to the user. Many of the folders on my phone appear empty, but I know I can access at least some files, because I found a couple of images in one of the Discord folders.