I added a female colleague WeChat before going to work, and sent her a message when I came back at night, but I didn't return. What's going on here? Am I in a hurry?

I added a female colleague's WeChat before work, and sent her a message at night without returning to me. What happened? I'm anxious. Maybe you didn't see it. Maybe people are busy and don't have time to reply to you. Maybe people don't want to talk to you. Because you didn't say how close you were. If the relationship is very good, he won't reply to you, maybe he just didn't see the right one and asked for other reasons. It's normal for him not to call you back. It may also be that people are dealing with you and gave you WeChat. In fact, they don't like you and won't reply to you.