Check that your device and Minecraft Bedrock version support shaders or render packs
Download a Bedrock-compatible shader pack or resource pack from a trusted source
Open the downloaded file on your device
Import it into Minecraft Bedrock
Go to Settings
Open Global Resources or Resource Packs
Activate the shader pack
Apply the changes
Start or load a world
If needed, enable Experimental Features for the world
If shaders do not work, update Minecraft Bedrock and your device graphics drivers
If your version no longer supports classic shaders, use a compatible render pack or RTX pack instead