my map doesn't show up in my phone files

My Minecraft pocket edition map does not appear in the Minecraftworlds file, but it is still active in the app, I wanted to backup it, but as I am in this situation, I can't backup it, I didn't want to lose this map, so I ask you to help, please. I already searched in: /Android/com.mojang.minecraftpe/files/games/com.mojang/minecraftWorlds