You will start to care about yourself. You will care about your personality and daily state, whether you can be consistent with the person you like in all aspects, whether your words and deeds can meet the expectations of the person you like, what you can give to the person you like, and whether you have the ability to get along with the person you like and share happiness.
Based on self-concern, people will weigh their own strength in the process of courtship, even criticize their own personality and communicate with others, and unconsciously put themselves in a lower position, and people will become modest and cautious.
There is a psychological skill called empathy. You can try to think about it: does the girl you like have the same emotional reaction to you as you do to her? Will she be worried that in front of quiet you, her activity will be interpreted as madness by you? In front of you with a wide range of knowledge, will she be interpreted by you as uneducated and despised by you? Does she think she's not good enough for you?
You don't need to worry about the difference between "dynamic" and "static", because the attraction of one person to another lies in the difference between two people. Just because a girl looks noisy doesn't mean she doesn't like quiet. On the contrary, quiet you are an unknown world to her, a world that needs her to explore. If you are willing to open your world and accept her, she may be happy to be with you.
"Motion" and "stillness" are not diametrically opposed concepts. In fact, people's personality is usually dynamic and vivid, just like running water, with ups and downs. When you meet a lively person, your activities will be stimulated. When you meet a quiet person, you will keep the same pace with her and want to be close to someone, and this person's behavior will affect your sports goals and action ability. You are complementary, and you can get what you want from each other.
In modesty and prudence, it is a steady attitude to carry out your own love activities. Regardless of the difference between "moving" and "static", it is a bit much ado about nothing to share her knowledge and her feelings.
Finally, I wish you have a good time with this girl!