I have used the Black side of the "Sicilian Defence, Najdorf Variation" thousands of times. It's the best opening for black. The games are always very violent.

Wikipedia - Sicilian Defence, Najdorf Variation

The Najdorf Variation of the Sicilian Defence is one of the most respected and deeply studied of all chess openings. Modern Chess Openings calls it the "Cadillac" or "Rolls Royce" of chess openings. The opening is named after the Polish-Argentine grandmaster Miguel Najdorf, although he was not the first strong player to play the variation. Many players have lived by the Najdorf (notably Bobby Fischer and Garry Kasparov, although Kasparov would often transpose into a Scheveningen).

The Najdorf begins:

1. e4 c5

2. Nf3 d6

3. d4 cxd4

4. Nxd4 Nf6

5. Nc3 a6

Black's 5...a6 aims to deny the b5-square to White's knights and light-square bishop while maintaining flexible development. If Black plays 5...e5?! immediately, then after 6.Bb5+! Bd7 (or 6...Nbd7 7.Nf5) 7.Bxd7+ Nbxd7 8.Nf5, the knight on f5 is difficult to dislodge without concessions.

Black usually plans a queenside minority attack to pressure White's e4-pawn. This is often carried out by means of ...b5, ...Bb7, and placing a knight on c5, or c4 via b6.

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In this game, I defeated France using the Black side of this opening.

https://lichess.org/2Fmqz8zW/black#0