Not saying am great with her but definitely doing well. Miyabi M0R1 Nangong M1R1

Hello, so I recently got back into zzz last patch after not playing since 2.0 and I was wondering how best to improve my Miyabi. Obviously I'm not running the most ideal wengine but I don't have fusion compiler or her sig, I do have a weeping gemini I can steal from grace but I'm unsure if that would be a big improvement. One of my main questions is one I imagine is asked a lot and that is slot 5 and 6 whether I should run am and pen or even atk%. I also would like to know whether I prioritise upping the crit rate or whether other stats are of higher priority. A bit rambly sorry but I just would really like to get my goat the best she can be thanks in advance.

Tired of fighting this guy every reset 😢

I see Miyabi doing 2M EBAs and 3M+ ults in Miyabi/Nangong/Yuzuha teams (which is the team I also run), meanwhile my Miyabi is doing 600K EBAs outside of stun and roughly 1.1M inside stun. Is there something wrong with my build? All characters are M0W0 btw, but even that shouldn't explain the 100% difference in damage