Because im a low level can I not get them??

Is there a mission that unlocks zolazin ships in the battle screen?
I just have dark shuttles...

you have to kill the shuttles before the zolazins can show up.

you need a piece of debris for each part of the mission

Which equals to 30 debres that you will be needing (10x3 completions). and without tons of energy refills you will probably not make it.

You've got to find an enemy Zolazin ship in your battle tab and defeat it. Since there are only two NPC combat slots though, if you haven't got one in your slots, then you've got to defeat whatever ships are already there first, and it may take several tries before one shows up.

Spoiler Below:

I've got a Zolazin Phantom XI on my screen at the moment. Level 70, 350 attack, 300 defence, 200 shields, 400 hull. Their ships look pretty cool. Defeating a Zolazin ship only gives you ONE debris when you defeat it though - so you need to defeat 30 Zolazin ships to totally complete this mission. Hardly anyone is going to be able to do that.

End Spoiler.

The Zolazin mission has a really good XP ratio though, so it's worth trying to do. 65 XP for 5 energy. That's 13 XP for every energy spent. Best mission I know of.