I can not join other people on Minecraft v1.17.11, sometimes, but sometimes I can.

No one at all can join me on my Minecraft on my devise ever.

I use an IPad ( 7th generation ), they  use an IPad ( 6th generation ).

I checked all settings in comparison to theirs, they are all the same in the game, even went on my Microsoft account, don't see any issues.

so why won't my Minecraft on my IPad allow multiplayer function?