Could you tell me if I made any grammar mistakes in my essay thank you!

Learning objectives
After I found out about the main understandings of business, all I wanted was to be a successful businessman. Education and correspondence are crucial in business. This is the main reason I want to go to this school, "Education". I started learning English at a young age. My father taught me English in the beginning, and he still teaches me to this very day. In life and business, you have to understand people to do that you must know their language. This is the first reason why I want to go to this school.
Even in first-grade math felt fascinating to me and it was always the first homework to do. And when I was in fifth grade my parents told me to get in 11th school as it was specialized in math so I studied for one whole year and I got in. It was the most memorable moment of my life and I learned that if I try, I succeed. From then on I started to realize that math was really important in life, as it is used in everything. This is the second reason why I want to go to this school, "To improve my math".
And as a businessman, you have to know things, you have to be smart, you have to know languages to better understand people, you have to calculate things in life and math, and you have to be creative. But no one can doubt that my interest and opinion in things change as I grow.