i forgot to mention this in the video but as of right now hosting your own online competitive doesn't even work right now .
Game Freak has killed 6v6 singles in pokemon Sword/Shield.
The games do not have a way to change the battle timer in online battles. Only having 20min is devastating if you were looking forward to do 6v6 battles in pokemon sword and shield.
Try looking up on youtube , live 6v6 wi-fi battles from the past few years and you will find that like over 80 or 95% of them take longer than 20min. this means that 6v6 battles can no longer be completed in time. I don't see gamefreak updating the games to add a 60min battle timer so yea as far as it goes for me right now 6v6 is dead. waiting to see more videos from others talking about this issue.
...
https://www.youtube.com/watch?v=S5tcg8HtYwc