Who should I pull for?

Hi, sorry for bad quality btw:)

Anyways, these are my characters and the weapons I own:

So, I’ve been wondering if I should go for(or try) Columbina, Zibai, or Varka.

Anyone could tell me which ones would be the best for my account?🥹

Tho I can only go prob for one of them, maybe if I’m lucky I can get two