Sarkahnis

Hello all, newer player here, roughly been on for about a month(?) now, maining a Nox Mage (Lvl14)...just want some general tips, advice, etc if anyone could offer? Couple key points; tips for arena? Holy hell, why is it so hard to win? Skillwise I Godstomp every player I've encountered, but it just doesn't matter I get wrecked by bads. Also, is there a efficient way to level up faster WITHOUT spending money in their greedy and overpriced shop?