JWfacts is great.
I had a positive experience debunking the genesis flood story with my wife, who was believing in God and the bible having been raised a JW.
Genesis is a good place to start when exposing the illogical WT interpretation of scripture, and rational thinkers will soon abandon the idea of the bible being inspired altogether. The flood myth is such an easy target... worth a shot.
JWfacts has good info on the flood. Just chip away slowly.
Also, the obviously silly things in scripture. Samson...basically everything to do with that dude. Jonah... Solomon’s temple.. it’s a comedy. I do love Jewish comedians though, so maybe not for everyone.