Mathematics is actually a very basic subject. If you have low attainments in this field, the possibility of engaging in scientific research in the future is almost zero. So don't underestimate your major. It is true that I was as confused as you two years ago, but when I came over, I found that mathematics is a discipline that exercises people's thinking. If you want to change your major, you can consider majoring in economics. If you want to develop better, you can consider being an actuary (a senior insurance talent who combines mathematicians, statisticians and investors) and a pure gold collar! ! In addition, I tell you that our major is the same, and remind you not to look down on your major! !