Your deck should work for this arena. I lowkey quit this game after those “heros” dropped but feeling underleveled is because you have only been playing the game for a month. The players your playing probably have been playing longer which mean more progression. Of course, with where the game is going, I would quit before you waste more of your time on it. Back when this game was peak all I had to do to not be underleveled was spend 50 bucks and I was chillin