What should I do? I belong to that kind of introverted person. Originally, I wanted to find a job as a clerk, but because of a club, I chose a clerk and customer service by mistake.

Introversion and extroversion are not affected by genes, but are generally caused by environmental factors. Long-term subtle influence has created bad personality habits, so these can be changed through exercise and adaptation. If you know that this makes you embarrassed to death, why don't you have the courage to face it? At first, the stranger you are, the more you say hello. Judging from each other's reaction, more than 90% people will give you a smile and greet each other. This will increase your courage, and it won't be long before you change. Then don't forget to trust me personally, it's your treat, and I really help you look forward to adoption.