Try to get close to the right contact person slowly, and at the same time see if she meets you and let her notice you.

Politeness is absolutely important, but it should be noted that the degree of courtship is not great, but there are many courtship times. One day she will feel lost without you, and then you can express your feelings. Don't worry, you can ask: Do you want me to chase you?

In fact, what you did before was a big step to catch up with her.

Then attack her to agree or disagree.