Am I wasting my time?

[Bollwerk]

I can't win for shit doing Arena. I've tried 5v5 (won 4 my first night, then lost the next 25 or so - and I end up getting matched up to people with WAY higher MMR, due to the lack of 5v5 teams) and 3v3 (got raped a few times and gave up).
My only wins were against some shit team that I got lucky was in the queue.
Is it simply not possible to box Arena by yourself with my class combo?

I suppose if I had 4 DKs and a healer, maybe I'd win some, but I have no desire to create another team just for PVP.

Should I just give up and play Arenas solo with other guildies?