How is this a blunder

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Apparently Castling was brilliant

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why is this brilliant?

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Was going to take the rook, but I was proud to find an even better move.

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bro

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Why is A6 better than A5 in this position? Only thing I can think of is because my pawns are no longer connected

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If this doesn't hurt the eyes I don't know what will.

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Why was taking their rook better than moving my queen out of danger?

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When your opening prep works beautifully.

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my first fork is also a checkmate- my 2nd game against a real player

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Fast checmate

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