Session 0 rule I put out for my table before I DM: I 100% will mess up a rule and I'm completely cool with giving you a quick "well actually..." to correct me. Anything beyond a quick correction risks derailing the game and we're going to just go with what I said and we'll circle back after the game to debate the rule for future sessions. Only exception is if my ruling more or less immediately leads to your death, then we can make sure we got it right."And you know what: we had an amazing time. We played that game for years. The reason I say you can do this is coz I want you to know that roleplaying is great fun to do it badly. That's how good this hobby is."
Exactly. Calm down. Stop sweating the rules, they don't matter. Just play. It's a blast. Get out of your own way, stop pretending that everything has to be perfect or by the book and just throw some dice.
Never had a player say that's not fair.