I can't import my old Minecraft world!

Help, i can't open my old Minecraft in the newer version of Minecraft. Currently I'm on Android 11, and from what I heard, we CAN'T mess with the "data" file directory, thus, i can't see my Minecraft file.

 

I've tried to convert the old world into ".mcworld" file and opened it, but the import process failed.

 

Please help me, i love that world