Assassin, modern setting, need to recommend similar novels.

I'm looking for a novel about a modern female assassin. I read it a long time ago. The content was roughly that the female lead was an assassin. She received a mission to take the male lead's life (The male lead was a big shot in XX city, and he was ranked second in the family). I remember that I assassinated him twice, but the result was of course a failure. The first time was at a masquerade party. The female lead wore a mask and danced with the male lead. She tried to assassinate him but failed and ran away. The second time, in a bar, the female protagonist disguised as a bartender and poured water for the three brothers. She wanted to secretly plant a bomb when they were not paying attention, but as soon as she turned on the timer, she was recognized by the male protagonist as a woman. Then, she was bitten. Because the bomb was about to explode due to delay, the female protagonist threw the bomb out of the window in a hurry (she was in a tall building) and then escaped in panic. The rest was unknown. She only knew that the female protagonist had lost her memory and was kept by the male protagonist (the introduction said). Is there any book friend who has read this novel? Please tell me as soon as possible. I will be very grateful. Please take a look, everyone.