How to install an add-on in Minecraft Bedrock
Most add-ons install automatically: download the file and open it with Minecraft.
Download the file
On the add-on page, press Download and save the .mcaddon or .mcpack file to your device.
Open it in Minecraft
Tap the downloaded file and choose Minecraft. Wait for the successful import message.
Enable the packs
Open the world settings and enable both Resource Packs and Behavior Packs. Turn on experiments when required.
If the file became a ZIP
Do not unpack .mcaddon or .mcpack files. If the browser added .zip, rename the file back to its original extension.