After the girl saw me, she ignored me. What should I do?

When a girl just meets you, she ignores you, which shows that she has a bad initial impression of you, whether it's the right appearance, figure or conversation. If you are satisfied with her and want to continue to develop, you should show her your excellent places, such as your financial strength, your literary talent or professional level, attract her attention, get her approval and make her want to be with you.

Do what you have to do, don't be stopped by her indifference, and try to show your advantages.