I'm struggling with the social contract....AITA?

Hi. I'm really struggling with the social contract and expectations. I played a B2 game recently, using my Dinosaur deck. I was questioned both during and after the game if it's truly B2. I had a crazy turn somewhere around turn 9 or 10. I had a \[\[Mirari's Wake\]\] out and had previously cast both a \[\[Nature's Lore\]\] and Discovered a \[\[Skyshroud Claim\]\] off of casting \[\[Pantlaza\]\], so I had a lot of mana. I resolved a \[\[Wakening Sun's Avatar\]\] to clear the board, and Discovered a \[\[Rishkar's Expertise\]\], drawing me 8 cards, which cast me a \[\[Palani's Hatcher\]\] for free. One of the other cards I drew (and of course cast) was a \[\[Last March of the Ents\]\] for 8 more cards, from which I ended the game. Again, this was around turn 10. I was told it's not Bracket 2? I got really good draws, idk...I'll post the list below. Please tell me what, if anything, I did wrong and how I can be a better opponent for my table and podmates in the future. TIA

Decklist: [https://archidekt.com/decks/20415106/jurassic\_park](https://archidekt.com/decks/20415106/jurassic_park)