Team-play with Orks requires....teamwork.
If I had known you were going to be in a 3v3, I wouldn't have recommended bike orks, not without team play. Alternatively, I would have kept your bikes in reserve, let your teammates advance up the board, and come roaring in 24" on a turbo-boost. Teamwork is key.
If you want to see the effectiveness of your army, play it in 1v1 settings, and eventually, as you learn your strengths and weaknesses, you'll be able to expand into team play and know how to effectively use your Orks. Glad you had fun.