I'm afraid of shrimp, so am I. It's cheeky not to blush, but if you really care, go out and socialize more, make more friends with others, and let yourself walk more freely and not be too restrained. Maybe you care about yourself, others think it's nothing. Just take part in more group activities. I used to be like this. Later, I went out to study and then played with my friends. Now that I have many friends, I won't feel embarrassed.