Hi Ayuwoki3794,
Thanks for reaching out! I'm sorry to hear about the issue with adding friends on Minecraft PE.
The Minecraft sign in may use the Microsoft account credentials for the account. Sounds like this account may be in a family. Please take a look at the troubleshooting article: Change
your child’s Xbox privacy and online safety settings.
Friends can join friends realms locally (this works if the friend is in the same area):
- click settings
- local server multiplayer
How to add a friend on Minecraft PE:
- On the home page
- click sign in [bottom left]
- sign in with Microsoft account
- click on play
- click menu
- select friend
- invite to game
- send invite
Take a look at this article: How to add new Xbox friends. If you need more assistance with Minecraft PE to try taking a look at
their support forums.
Hope this helps. Let us know the results!