Your attack has a clear plan
Your latest win as Black against athe shows the best side of your game. You chose the Sicilian Defense and you did not rush. You brought out your pieces calmly, avoided early pawn pushes, and when your opponent stalled with his bishops and queenside moves, you opened the line for your rook and used your queen on the right squares. That is how a strong attacking idea should be set up: first place your pieces, then look for the enemy weakness.
You also showed good attacking instinct in the checkmate win against tjlcbakx: you spotted the chance to finish the game against the king when only a few pieces were ready. That tells me your tactical radar works well when the target appears.
Main improvement area: keep your king safe before advancing too many pawns
Before every serious pawn move ask yourself: does this move help my king safety or does it make my king more exposed? If the answer is not clear, prefer to move a piece to a safer square, or keep your king in a small shelter. The king is not a pawn; you cannot bring him back once the shelter is broken.
Convert winning positions earlier and on the board
In your latest Sicilian win, the result came because your opponent ran out of time. You were winning anyway, and that is a fine result in blitz, but stronger players will not always give you the flag. When you have the advantage, take an extra second to find the cleanest way to increase the pressure on the opponent's king. Often a quiet move, like adding a rook to the attack or moving the queen to a better square, turns a winning position into a forced or resign mate.
This is the difference between almost winning and completely winning; the posture is close. If you add a short routine for checking your king after each move and then a closer look at the fastest winning plan, your wins will feel less postponished.
Your practical checklist
- Check your king's safety before every attacking pawn push.
- In your good winning positions, spend a little time looking for the clearest mate instead of hoping for the clock.
- When you are attacking, keep your pieces in contact with each other. Do not let the opponent disconnect them with loose lanes.
- Trust your opening instincts in the Sicilian, and use the same bright mind to defend your own king first.
You have a real talent for attacking play and for finding aggressive plans in the opening. Add a clear safety habit and you will turn close losses into regular wins, and many of your winning games will finish before the time flag lands.