Daily Chess play - 1279 - Need to improve my castle side defense

First game, Forked his Queen and Bishop. He retreated and my Knights got to work. Just kept on taking until opponent resigned
Second game, I got into some trouble on my castle side. I let his pawn promote and it fell apart from there.
Third game, Apparently my Queen's move to f5 was a mistake as he can capture my Queen at the cost of a Knight and Bishop. I got lucky and so I went on the offensive. I also then blunder my White Bishop but luckily he didnt see it. Opponent resigns.

Overall lesson I take from today is that I need to defend on Castled King better. Not sure how but it is another weakness I see repeating. Thanks for watching. Please Like and Subscribe.

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