Male compatriots, no matter who is wrong in a quarrel with your girlfriend, as a man, you should apologize to her. Girlfriends are for care, not for quarrels.
As for what gift to give, you must know her habits. According to her habits, choose the right one for her, a necklace, or a bracelet, a set of good cosmetics, and her favorite brand-name clothing, a crystal music box, a cat-shaped wall watch, romantic and cute, and a color-changing cup, a romantic garden puzzle (the three-dimensional kind), a beautiful makeup box (you will always be the most beautiful in my heart), color-changing clothes, a card you made by yourself, or write down every bit of you and her, write your gratitude to her, thank her for accompanying you, and give it to her. A bolder way is to arrange candles in an open space, arrange them in a heart shape, write your sincere apology, take her to the open space, apologize to her in person, and be sincere. Girls care not about gifts, but your sincerity. I wish you success!