Unable to connect to world

THIS AFFECT EVERY SINGLE VERSION OF BEDROCK SINCE BETTER TOGETHER UPDATE
THIS IS A PROBLEM I AND MY FRIENDS EXPERIENCE ALMOST EVERY SINGLE TIME WE TRY TO JOIN.

EVERY SINGLE TIME IT WRITES JUST: 'Unable to connect to world'

I am hosting from Win10, via LAN i can join, but when my friend 20km appart tries to join it fails almost every single time. Once it fails first time, whole day is ruined. I am already sick of this. I bought this game already 4 times and I can not even play multiplayer.