Can't use folders or edit MCPE folder and files

Basically, I downloaded a world/map file from the internet, it was safe first of all but one problem was, it was .zip, I renamed it .mcpack and then tapped on it to make the automatic Minecraft world import process, during which, it tells that to clear up storage space whatever things, however as I did went to see inside the world folder, I found a weird folder that never was in my world, and neither can I edit that folder, FYI other games that I have are free to do whatever I want with it, but only for Minecraft it seems that I can't edit or change or even move a folder there (like the world that I downloaded) this manual process fails and now I can't download or import the world, pls fix that

Also, in that worlds folder, the weird world was their but neither my 2 other worlds exist in that folder, Oh and also, SPECIFICALLY if I manually move that folder there it claims that Permission is denied, more info is in the pictures

Map Credits: https://mcpedl.com/titanic-1-to1-full-interior/, by Xand lee