What do I Pull?

https://preview.redd.it/efe6v4jbcjse1.png?width=472&format=png&auto=webp&s=01c9f4d3fc0fe2edbd58a7461c8efbaa1773e359

These are the current characters I have. Should I pull for Castorice(because cool dragon) or Anaxa(because like weakness stuff or something), or someone else? Ima choose Ruan Mei over loucha cuz i think shes the better pick, but tbh im really bad at the game so can someone help me out. please and thanks you. :)