Undergraduate / have had fall out on my grades through the semesters [2]

The main reason being the sudden demise of my close friend that affected me very much and getting over this tragic incident took me a long time. this is the paragraph ive framed

I have had fall out on my grades through the semesters which was due to tragic demise of my close friend in a road accident, which affected me to the core. But slowly along with the support of my family I came out of it, bringing alongside into terms my friend's family. I have since then grown emotionally as a mature person. And emphatically I am onto upgrading my grades. I am aware that your university expects high standards from its students. On my part, I can assure you of my sincerity and hard work. I am confident that my enthusiasm will enable me to live up to your expectations. I sincerely hope you find my application worthy of your institution and grant me admission with adequate financial assistance.

Thanks for ua responses in advance!