rating reset

how can i reset my rating?
I won a couple of games, with a high rating, although I didn’t really know how to play, as a result, I either get kicked from the games, because there are few games and it’s difficult to balance, or I ruin the game terribly for people.

You can't. Host / join some all welcome lobbies and get some games. Resetting rating would result in a huge wave of smurfs.

Required rating for participation in balance talks when?