Board Game Arena

Hello everybody. Im The Cosmic Girl. Id like to know what is the best hour for a player in my Time zone to play Arena. I want to be the next champion but how to improve without playing against the best players ? I dont want to play always against the same player in Arena, he is a kind boy but it is not funny to play the same player again and again. Please dont say me to play tournaments, because I want to play fast and Not turn based games. Take care of you !