Sounds like an interesting and really hard sport. I might look into it later when I have time.

initially a player from one team has to go into the opponents court, tag all the players and make it back without being Tackled

Sounds impossible for me. I feel like I would catch maybe 1 or 2 people but they are constantly moving.

hold your exhaled breath while tagging all the opponents

I would not last if I had to hold my breath catching one or two moving people.