Sister (or brother), when I was your age, I also wanted to get rid of it, but my family wouldn’t let me do it. The reason was similar to yours, and it was of no use even if I argued or fought. But when I grew up, I did use the money I earned to get my teeth fixed. Later, a dentist I trusted told me about the many negative consequences of correcting my teeth. For example, if the correction is not done well, my teeth will become loose by the time I am 40 years old. He suggested that I should not have my teeth corrected unless they were very ugly. I can't say anything else.
If you really want to get teeth, go for it if you can (for example, get teeth for me if I get a good grade in the exam, etc.). If you can’t get it, just save money secretly (actually, you don’t have much money, long time). When you are older, you can earn less than a month’s salary.) It’s not too late to wait until you leave your parents and go to college.
Don’t quarrel with your family over this kind of thing, it’s meaningless and unnecessary (maybe it’s because I’m nine years older than you, so I’m a bit bitter, O(∩_∩)O haha~, you’ll understand me when you grow up and leave home)< /p>