Problem with the Legendary Texture Pack (Bedrock)

Hi and thanks for reaching Xbox gamer's community. My name is Josef.
Thanks for reaching out! I'm an Independent Advisor and a Microsoft user like you.
I'll be happy to assist you out today.

Hope you're doing great today Regz

For this specific issues with Minecraft the best option is contact Mojang support via link below:
https://help.minecraft.net/hc/en-us/requests/new

Some texture packs was not transfered from 360 edition to the newer Bedrock edition.

you need to go to the store, texture packs then search bedrock pack or something like that and download it (its free) and then you’ll be able to sign in!

If Minecraft is working fine without the texture pack, and only the textures are the issue, then MirrormasterOO7 needs to contact BDCraft first.

If MirrormasterOO7 is using Minecraft on the Xbox One, or the Windows 10 version, then Microsoft took the support for the "Bedrock" version of Minecraft.

Java Minecraft is Mojang's responsibility.

But since this problem is about a texture pack not working correctly, BDCraft has to provide support, and if there is a new incompatibility in a Minecraft version with their texture pack, BDCraft has to figure that out.

So MirrormasterOO7 has to contact BDCraft first, not Mojoang. And since Microsoft has bought Mojang, they are also providing the support.

So this article has a little picture slideshow that gives a brief how-to for getting texture packs: https://www.minecraft.net/en-us/article/try-new-bedrock-textures

After that go to the settings menu of your world when you load it up and the option to add texture packs, shaders, and resource packs should be one of the first things to come up.