Everytime one of my friend tries to join my world it will say locating server for them.

Anytime one of my friends join a world it says locating server m. I play on switch while my friend plays on xbox. It will register into the game as a player but he will not count as an entity ( can't /kill /tp etc...). I've deleted and reinstalled Minecraft, checked for corrupt data, used different wi-fi, used different worlds, restarted my system, and nothing works. My friend has waited various times (2min-1hr) to see if it will even load in but it will not. Please fix this.