In your most recent game you lost:
https://www.chess.com/game/live/110876433077?
the main thing that I noticed:
In the opening, you played the move f5 which seemingly wins the g2 pawn and the rook on h1, which turned out to be not the case. Because you are playing 30 min, if you play a move like f5, you have to be willing to calculate the line all the way to the end, to figure out its conclusion, you can't just assume that since you are winning the g2 pawn you will win the rook and the game. Another thing i noticed with that was that you took 20 seconds to play that move, which means that you maybe saw it and calculated 1 or 2 moves.
An example line I might've calculated for this:
f5, ng5, bxg2, nxe6, qe7, qe2(threatening nxc7), bxh1, nxc7, kd7, nxa8, qxe2, kxe2, be4, saving my bishop.
The position then enters a dynamic state, as white is up a pawn but the knight on a8 is trapped. Just from intuition, I would assume that White has some way to save the knight as black needs 4 moves to save it(nf6,be7,nc6,rxa8), so I would assume that White is better.
If i could, I would calculate as far as I could, or until I saw a winning line for White that would invalidate the whole thing.
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