Not earning credits?

So, I have iBot botting my ship in x-3 killing mordons, saimon, and lordakia. It earns uridium and ep and honor, however, it always says it is earning credits, but my credits always stay in the same range. For example, right now it says I have earned 1,764,000 credits, and I have 11mill credits total. However, when I started botting, I had 11mill credits! I am using x1 ammo and PLT-2026 rockets. Any tips on how to earn credits better?

do it in 1-7 with bk's and sks you earn much more also buy damage and shield boosters and pack on alot of sep so it doesn't take alot to kill the aliens with your x1 get it to pick up the cargo too ! every little helps