Also keep in mind that playing "agressive" doesnt always mean crazy sacrifices, questionable moves, or something that leads to...nothing. Playing agressive can also be placing your pieces on their most active square, gaining space to push your opponents pieces back, an exchange sacrifice for a nicely placed Knight, or simply following the opening principles:
Control the center
Develop your minor pieces toward the center
Castle
Connect your Rooks
All seems like common sense stuff, but following these principles leads to active play, which in turn can lead to agressive play. The name of the game is piece activity. Without it you dont win.
Thats why an opening principle is knights before bishops because bishops can be kicked easily from their position. Best is not to let your opponent win too much tempo's on the bishop, sometimes just trade it for a knight instead of letting your opponent pawns move forward and your bishop losing tempo's is a lot better.
If you have the two bishops slowly open up the position, the more you will trade to the endgame the better your game will become, but playing blunder free chess is I think the main objective to become a better player and win more games.
Playing more aggressive is all about piece coordination and development, your pieces have to work together, an example is a knight and queen because they are very good working together mating the enemy king, they supplement each other. Another example is the two connected rooks on an open file, often two rooks connected with each other are stronger and can be more aggressive then two lose rooks on the board.
If you want to be more aggressive still you can use principles like opposite side castling ( your opponent goes kingside, you go queenside) and giving up a few pawns for a lead in piece development. Also always look for sacrifices if you got 3 or more pieces aiming at the opponent king(side). Most sacrifices are on f7/f2 or h7/h2 so always keep an eye on those squares.
Another good tip is to sacrifice the exchange, capture your opponents knight or bishop with a rook because rooks only become good later in the game when the position has been opened up and traded a bit. Instead bishops and knights are better in this phase so sometimes a trade will increase your attacking chances alot.
If I look at your games I would focus on playing more aggressive openings. If you answer e4 with e5 from black, going into a philidor defense with d6 is a bit passive, it will take a while to get your pieces into attacking squares.