Not being able to make .mcworld files properly.

So basically, I created a map based off Slender on my iPad Pro. I made a copy of that map, but did not open it. Then I exported that world onto my laptop, where I transferred it to Google Drive, where I downloaded it on my iPad onto a document manager app. I then converted it into an .mcworld file by making it a zip file and renaming it, but the problem is that whenever I copy the file onto Minecraft, and then open the world up, it always spawns me onto a blank world. My world, my map? It’s not there, at all. However, all of the properties of the world I set for it, including the add-on, is there. If you need more help on this, take a visual look. https://youtu.be/ITyMDV_rLAI