Turns out I was unable to read, write and delete files and folders using X-plore on my Google TV 11 device (Realme Stick) because there is a bug in Android 11 when allowing permissions to access the internal storage (including external storage formatted as internal) by selecting the "Only when app is in use" option, therefore, the only workaround is to select the other option to allow the app to always read the internal storage, but this is something that must be done manually by going to:
settings -> apps -> look for the app -> permissions -> select the option to allow the app to always read the internal storage, it's usually the first one:
Not all the apps have the option, that's why I believe this is something that developers must fix in its own apps because there are others where the option works as expected, I noticed it works on VLC, Nova Video Player, FX File Explorer, RetroX among others.
Thanks for sharing!