Game is great. I'm Level 7 already. Only played 1v1 so far. Do you need to play 5v5 with friends? Seems so. Can't find an option for 10 strangers to play.
But on the whole the game is great fun!!
Also, don't forget that there's a detailed survey to fill out in the game. It redirects you to the Switch browser.
5v5 is totally accessible - just not Ranked mode at first