IMHO,

Take a few weeks and don't make a new team, Keep playing. You will drop in the ratings and get to a level of opponents that aren't going to rape you. Play those games and you will actually have time to learn and get your speed up on what, when and who. 10 quick games a week won't do that for you.

It's actually a big jump from BG's to arena. In bg's you learn to fight something with a mind. In arena it has a mind and communicates with others that work as a team, has gear, speed and skill.

If it makes you feel better our 3's team got 2 maned in a warm up skirmish match in seconds. Mage and rogue who were on 2200 teams just playing.