Ovinomancer
No flips for you!
I'd say you've moved past "metagaming" into outright bad faith play.Oh naughty word.
If you disagree, please explain how this would be the DMs fault:
My friend Alex is DMing the 1st PF2 AP for our Sunday game. Other than 2 one shots, this is his first time actually DMing.
He has no idea that I've got the first module sitting at home on my shelf. Bought & read it day one. Mostly because that's a great way to see how Paizo thinks a PF2 adventure should look, + maybe I'll run this(?). When he announced he wanted to run this AP I canceled any plans on buying #s 2+.
If I use the info I already know to my/the parties benefit before making the rolls or whatever - where the key items/clues are, what monsters are where, etc? That meta-gaming is on me, not the DM.
I don't need to do any analysis of actual play to reach this conclusion because it's plainly evident that getting a copy of the GM's secret notes, hiding that fact, and then exploiting those two secrets is in bad faith. I don't need to consider at all what your PC's goals are in any scene because you've already broken fairh when you failed to disclose you knew the adventure.
Now, if you do disclose to your DM, then it is on them, not you.