why is this a brilliant move

Hi, beginner here (just started two weeks ago) and I just had my first brilliant move. Can anyone explain why this move is brilliant lol. To me it’s just an ordinary move with the rook taking the pawn.

https://www.chess.com/live/game/70692831035

[Event "Online Game"]
[Site "Chess.com iPhone"]
[Date "2023.02.21"]
[Round "?"]
[White "mo1423"]
[Black "jasohui"]
[Result "1/2-1/2"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"]
[WhiteElo "268"]
[BlackElo "291"]
[Termination "Game drawn by 50-move rule"]

1.e4 e5 2.Qh5 Nf6 3.Qxe5+ Be7 4.g4 d6 5.g5 dxe5 6.gxf6 Bxf6 7.Bb5+ Bd7 8.d3 O-O 9.Na3 Qe7 10.Nf3 Qb4+ 11.c3 Qa4 12.Bxa4 Bxa4 13.b3 Bxb3 14.axb3 Be7 15.Rg1 Rd8 16.Kd2 Nc6 17.d4 exd4 18.cxd4 Na5 19.Ng5 Nxb3+ 20.Kc2 Nxa1+ 21.Kb2 Rxd4 22.Kxa1 Rd3 23.Rg3 Rad8 24.Rh3 R8d4 25.Bb2 Rd6 26.Nb5 h6 27.Nxd6 Bxd6 28.Rxd3 hxg5 29.e5 Be7 30.Rg3 f6 31.exf6 gxf6 32.h4 Kg7 33.Rf3 Kg6 34.Re3 Bd8 35.Re8 Kh5 36.Rxd8 Kxh4 37.Rd4+ Kh3 38.Rd3+ Kg2 39.Bxf6 Kxf2 40.Bxg5 Ke2 41.Re3+ Kd2 42.Bf4 Kc2 43.Bxc7 b6 44.Be5 a5 45.Rc3+ Kd2 46.Kb2 b5 47.Rc2+ Kd3 48.Rc3+ Kd2 49.Bf4+ Ke2 50.Re3+ Kd2 51.Rc3+ Ke2 52.Bc7 a4 53.Bd6 Kd2 54.Bb4 Kd1 55.Rc5 a3+ 56.Kxa3 Ke2 57.Rxb5 Ke3 58.Re5+ Kf3 59.Bd2 Kg4 60.Re4+ Kf5 61.Rf4+ Ke5 62.Kb4 Ke6 63.Kc5 Ke5 64.Rd4 Kf5 65.Bf4 Kg4 66.Be5+ Kf3 67.Rd3+ Ke4 68.Rd4+ Kxe5 69.Rd5+ Ke4 70.Kc4 Ke3 71.Rd4 Kf3 72.Kd3 Kg3 73.Re4 Kf2 74.Re3 Kf1 75.Kd2 Kf2 76.Re2+ Kf3 77.Kd3 Kf4 78.Re4+ Kf5 79.Kd4 Kg5 80.Re5+ Kf4 81.Re4+ Kf3 82.Re3+ Kf4 83.Re4+ Kf3 84.Kd3 Kg3 85.Re3+ Kf4 86.Kd4 Kf5 87.Kd5 Kf6 88.Re6+ Kf5 89.Re4 Kg5 90.Ke5 Kg6 91.Ke6 Kg5 92.Kf7 Kf5 93.Re6 Kf4 94.Kf6 Kf3 95.Re5 Kg3 96.Kf5 Kf2 97.Re4 Kf3 98.Rf4+ Ke3 99.Ke5 Kd3 100.Rd4+ Ke3 101.Re4+ Kd3 102.Kd5 Kc3 103.Rd4 Kb3 104.Rc4 Kb2 105.Kd4 Kb3 106.Kd3 Ka3 107.Kc3 Ka2 108.Rb4 Ka3 109.Rb3+ Ka4 110.Rb4+ Ka5 111.Kc4 Ka6 112.Rb5 Ka7 113.Kc5 Ka6 114.Rb6+ Ka5 115.Rb5+ Ka4 116.Kc4 Ka3 117.Rb4 Ka2 118.Kc3 Ka3 {1/2-1/2}

Wait how do I share the game

https://www.chess.com/analysis/game/live/70692831035?tab=review