Issues converting AZW3 files

HI! I panic downloaded all my kindle books onto my pc before amazon decided to get rid of the feature, but I didn't think about DRMs until right now. I've tried following a ton of tutorials to get rid of the DRMs with plug ins and I just can't figure out why it's not working.

All my kindle books are in .azw3 format
I've installed both DeDRM (10.0.0) and KFX Input (2.21.0)

so far I've been unsuccessful in changing the format through any way using Calibre and could use any help anyone can give. I'm trying to escape amazon's system and will eventually be replacing my kindle as well.