In need of some guidance

Hi! I've just come back to the game and I know roughly what I'm supposed to do. I created a new season character (to play the new class, basically), finished my Pass and got to 61, got my artifacts and my PEN and TET Blackstar as well as Jetina's TET Boss gear and I'm now in need of silver, I think.

This is what my character looks like right now and that's all the money I've got right now (I spent 4 bill on the Oquilla crystal).

I tagged a lvl 61 Musa that I will be sharing my equipment with to farm somewhere, but I'm gonna need your help to figure out where.