To learn how to write a letter of motivation, you should watch the following video
Motivation letter
https://www.youtube.com/watch?fbclid=IwAR0lj8xPwxMVFHWHM9Gs56-Yae8edbp60lD9yVCI8Mtiu6qJYJKvSo3dYz0&v=Lf22avp3MRo&feature=youtu.be