HOW TO INSTALL ADDON? (.mcaddon)
1- Download .mcaddon
2- Open the file and wait for it to automatically import into Minecraft
3- Activate the resource pack and behaviors in your world.

HOW TO INSTALL MAP? (.mcworld)
1- Download .mcworld
2- Open the file and wait for it to automatically import into Minecraft

HOW TO INSTALL TEXTURE? (.mcpack)
1- Download .mcpack
2- Open the file and wait for it to automatically import into Minecraft
3- Activate the resource pack in your world.

NOTE:
If you can't open the file, you'll need to download a file explorer from your store.