What am I doing wrong?

People with their top tier augments already.

I'm still trying to get the augments I want for ONE weapon.

What am I missing?

Tons of grinding or carrying over from base PSO2

Assuming you're not talking about the 8 slotted gear that some people have from PSO2, there are a few ways people could have augmented their stuff already.

  • Grinding tons of capsules and then trading them in at the enhancement NPC for higher rank versions.

  • Using the personal shop to buy whatever caps they need.