Change of Major Request to Undergraduate Student Admission Services

https://owl(dot)purdue(dot)edu/owl/subject_specific_writing/professional_technical_writing/basic_business_letters/sample_letters.html
here is the link for a sample letter format.
following below steps . Here are simple answers.
1. I am interested in global economy especially finance and crypto currency investing
I want to leave CS major due to long estimated graduation years ,but my GPA in this quarter is below 2.0 so, try to transfer next quarter.
2. one quarter
3. i was hard to concentrate during pandemic and all courses were changed to online courses so, I barely study on CS major by myself . I spent most of time at home and study blockchain and cryptocurrency based on my future interest and job. I realized coding itself does not help my goal to succeed because I need to have knowledge for a new digital economic and investing which is really important nowadays for the qualified assets due to monetary inflation. I was sick last quarter for few weeks after I got to U.S and not sure it was cold or covid-19 so, I lost a way to catch up the course materials .
4. Need your help

5. Need your help.
Also there are two additional question that I need to write . You can write on the bottom and I will cut and paste it
- 1. Why would you like to change your major to U/U?
2. What major are you planning to declare and how soon will you be able to declare this new major (after being a U/U student)? - For me, ex) one quarter . economic major
3. Why have you not declared a major already? . I was trying to follow the degree work but realized too many courses that I need to focus on coding and not interesting in it recently with online courses, so I was trying the find a way to transfer economic major but failed to follow condition due to low GPA.
If you need more information about me, feel free to send messages to me