Occasionally, packs downloaded from realms or multiplayer worlds can become corrupted and you need to remove them. The same applies for downloaded behaviour packs from sites like mcpedl.com. The following guide will show you how to delete these packs. We took these screenshots on Android, but the menu structure is identical across all bedrock devices.
Launch Minecraft and tap ‘Settings’
Scroll down and tap ‘storage’
Select ‘Resource Packs’ or ‘Behavior Packs’
Find the pack you want to delete and tap it.
Tap the trash icon to delete it.
That’s it! The packs have been removed from your device.
As always, if you’re still looking for help, make a post over on r/MinecraftHelp!