I can’t play multiplayer on Minecraft because of my settings that I can not change

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.

I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today despite this Liam

If you have a child account you need to ask to the family organizer to change your privacy settings here:

https://account.xbox.com/Settings

You can double check who is the family organizer here:

https://account.microsoft.com/family/home

Please note that this can't be bypassed until you reach the adulthood

How to change the xbox setting if the my microsoft account show that I’m not an adult yet? I can’t change any setting on xbox settings. Also, I really want to play minecraft dungeons with my friend, but I can’t fix this problem, because I can’t change
the setting on xbox.

How do I change privacy settings, I can’t friend people on minecraft pocket edition and I can’t play online or on realms, what do I do?

Please fix my privacy and online safety settings in minecraft pe so I can play with my friends

i don't know where i can change my microsoft settings to play minecraft multiplayer

From Minecraft/Microsoft -

https://minecraft.net/en-us/article/minecraft-multiplayer-server-safety

“Join Multiplayer Games” Settings
If you have your settings set to block joining multiplayer games, you can’t join any multiplayer games in Minecraft, including shared local worlds, Realms or servers. To enable multiplayer in Minecraft, make sure this setting is set to ‘Allow.’

However, just like ASCllnaut, that setting was already turned on for my children. In other words I'm in the same boat, we can play on the LAN but not on a realm.